2020: d25: ex2: add solution

2019/d13/ex1/ex1.py

@@ -0,0 +1,213 @@
+#!/usr/bin/env python
+
+import sys
+from dataclasses import dataclass, field
+from enum import IntEnum
+from typing import Dict, List, NamedTuple, Iterable, Tuple, TypeVar
+
+
+class ParameterMode(IntEnum):
+    POSITION = 0  # Acts on address
+    IMMEDIATE = 1  # Acts on the immediate value
+    RELATIVE = 2  # Acts on offset to relative base
+
+
+class Instruction(NamedTuple):
+    address: int  # The address of the instruction, for convenience
+    op: int  # The opcode
+    p1_mode: ParameterMode  # Which mode is the first parameter in
+    p2_mode: ParameterMode  # Which mode is the second parameter in
+    p3_mode: ParameterMode  # Which mode is the third parameter in
+
+
+def lookup_ops(index: int, memory: List[int]) -> Instruction:
+    digits = list(map(int, str(memory[index])))
+    a, b, c, d, e = [0] * (5 - len(digits)) + digits  # Pad with default values
+    return Instruction(
+        address=index,
+        op=d * 10 + e,
+        p1_mode=ParameterMode(c),
+        p2_mode=ParameterMode(b),
+        p3_mode=ParameterMode(a),
+    )
+
+
+class InputInterrupt(Exception):
+    pass
+
+
+class OutputInterrupt(Exception):
+    pass
+
+
+@dataclass
+class Computer:
+    memory: List[int]  # Memory space
+    rip: int = 0  # Instruction pointer
+    input_list: List[int] = field(default_factory=list)
+    output_list: List[int] = field(default_factory=list)
+    is_halted: bool = field(default=False, init=False)
+    relative_base: int = field(default=0, init=False)
+
+    def run(self) -> None:
+        while not self.is_halted:
+            self.run_single()
+
+    def run_no_output_interrupt(self) -> None:
+        while not self.is_halted:
+            try:
+                self.run_single()
+            except OutputInterrupt:
+                continue
+
+    def run_single(self):  # Returns True when halted
+        instr = lookup_ops(self.rip, self.memory)
+        if instr.op == 99:  # Halt
+            self.is_halted = True
+        elif instr.op == 1:  # Sum
+            self._do_addition(instr)
+        elif instr.op == 2:  # Multiplication
+            self._do_multiplication(instr)
+        elif instr.op == 3:  # Load from input
+            self._do_input(instr)
+        elif instr.op == 4:  # Store to output
+            self._do_output(instr)
+        elif instr.op == 5:  # Jump if true
+            self._do_jump_if_true(instr)
+        elif instr.op == 6:  # Jump if false
+            self._do_jump_if_false(instr)
+        elif instr.op == 7:  # Less than
+            self._do_less_than(instr)
+        elif instr.op == 8:  # Equal to
+            self._do_equal_to(instr)
+        elif instr.op == 9:  # Change relative base
+            self._do_change_relative_base(instr)
+        else:
+            assert False  # Sanity check
+
+    def _fill_to_addres(self, address: int) -> None:
+        values = address - len(self.memory) + 1
+        if values <= 0:
+            return
+        for __ in range(values):
+            self.memory.append(0)
+
+    def _get_value(self, mode: ParameterMode, val: int) -> int:
+        if mode == ParameterMode.POSITION:
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        elif mode == ParameterMode.RELATIVE:
+            val += self.relative_base
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        assert mode == ParameterMode.IMMEDIATE  # Sanity check
+        return val
+
+    def _set_value(self, mode: ParameterMode, address: int, value: int) -> None:
+        if mode == ParameterMode.RELATIVE:
+            address += self.relative_base
+        else:
+            assert mode == ParameterMode.POSITION  # Sanity check
+
+        assert address >= 0  # Sanity check
+        self._fill_to_addres(address)
+
+        self.memory[address] = value
+
+    def _do_addition(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs + rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_multiplication(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs * rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_input(self, instr: Instruction) -> None:
+        if len(self.input_list) == 0:
+            raise InputInterrupt  # No input, halt until an input is provided
+
+        value = int(self.input_list.pop(0))
+        param = self.memory[instr.address + 1]
+
+        self._set_value(instr.p1_mode, param, value)
+
+        self.rip += 2  # Length of the instruction
+
+    def _do_output(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.output_list.append(value)
+
+        self.rip += 2  # Length of the instruction
+        raise OutputInterrupt  # Alert that we got an output to give
+
+    def _do_jump_if_true(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond != 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_jump_if_false(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond == 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_less_than(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs < rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_equal_to(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs == rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_change_relative_base(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.relative_base += value
+        self.rip += 2  # Length of the instruction
+
+
+def main() -> None:
+    memory = [int(n) for n in sys.stdin.read().split(",")]
+    game = Computer(memory)
+    game.run_no_output_interrupt()
+
+    T = TypeVar("T")
+
+    def grouped(l: Iterable[T], n: int) -> Iterable[Tuple[T, ...]]:
+        return zip(*[iter(l)] * n)
+
+    print(sum(1 for __, __, tile in grouped(game.output_list, 3) if tile == 2))
+
+
+if __name__ == "__main__":
+    main()

2019/d13/ex2/ex2.py

@@ -0,0 +1,249 @@
+#!/usr/bin/env python
+
+import sys
+from dataclasses import dataclass, field
+from enum import IntEnum
+from typing import Dict, List, NamedTuple, Iterable, Tuple, TypeVar
+
+
+class ParameterMode(IntEnum):
+    POSITION = 0  # Acts on address
+    IMMEDIATE = 1  # Acts on the immediate value
+    RELATIVE = 2  # Acts on offset to relative base
+
+
+class Instruction(NamedTuple):
+    address: int  # The address of the instruction, for convenience
+    op: int  # The opcode
+    p1_mode: ParameterMode  # Which mode is the first parameter in
+    p2_mode: ParameterMode  # Which mode is the second parameter in
+    p3_mode: ParameterMode  # Which mode is the third parameter in
+
+
+def lookup_ops(index: int, memory: List[int]) -> Instruction:
+    digits = list(map(int, str(memory[index])))
+    a, b, c, d, e = [0] * (5 - len(digits)) + digits  # Pad with default values
+    return Instruction(
+        address=index,
+        op=d * 10 + e,
+        p1_mode=ParameterMode(c),
+        p2_mode=ParameterMode(b),
+        p3_mode=ParameterMode(a),
+    )
+
+
+class InputInterrupt(Exception):
+    pass
+
+
+class OutputInterrupt(Exception):
+    pass
+
+
+@dataclass
+class Computer:
+    memory: List[int]  # Memory space
+    rip: int = 0  # Instruction pointer
+    input_list: List[int] = field(default_factory=list)
+    output_list: List[int] = field(default_factory=list)
+    is_halted: bool = field(default=False, init=False)
+    relative_base: int = field(default=0, init=False)
+
+    def run(self) -> None:
+        while not self.is_halted:
+            self.run_single()
+
+    def run_no_output_interrupt(self) -> None:
+        while not self.is_halted:
+            try:
+                self.run_single()
+            except OutputInterrupt:
+                continue
+
+    def run_single(self):  # Returns True when halted
+        instr = lookup_ops(self.rip, self.memory)
+        if instr.op == 99:  # Halt
+            self.is_halted = True
+        elif instr.op == 1:  # Sum
+            self._do_addition(instr)
+        elif instr.op == 2:  # Multiplication
+            self._do_multiplication(instr)
+        elif instr.op == 3:  # Load from input
+            self._do_input(instr)
+        elif instr.op == 4:  # Store to output
+            self._do_output(instr)
+        elif instr.op == 5:  # Jump if true
+            self._do_jump_if_true(instr)
+        elif instr.op == 6:  # Jump if false
+            self._do_jump_if_false(instr)
+        elif instr.op == 7:  # Less than
+            self._do_less_than(instr)
+        elif instr.op == 8:  # Equal to
+            self._do_equal_to(instr)
+        elif instr.op == 9:  # Change relative base
+            self._do_change_relative_base(instr)
+        else:
+            assert False  # Sanity check
+
+    def _fill_to_addres(self, address: int) -> None:
+        values = address - len(self.memory) + 1
+        if values <= 0:
+            return
+        for __ in range(values):
+            self.memory.append(0)
+
+    def _get_value(self, mode: ParameterMode, val: int) -> int:
+        if mode == ParameterMode.POSITION:
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        elif mode == ParameterMode.RELATIVE:
+            val += self.relative_base
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        assert mode == ParameterMode.IMMEDIATE  # Sanity check
+        return val
+
+    def _set_value(self, mode: ParameterMode, address: int, value: int) -> None:
+        if mode == ParameterMode.RELATIVE:
+            address += self.relative_base
+        else:
+            assert mode == ParameterMode.POSITION  # Sanity check
+
+        assert address >= 0  # Sanity check
+        self._fill_to_addres(address)
+
+        self.memory[address] = value
+
+    def _do_addition(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs + rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_multiplication(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs * rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_input(self, instr: Instruction) -> None:
+        if len(self.input_list) == 0:
+            raise InputInterrupt  # No input, halt until an input is provided
+
+        value = int(self.input_list.pop(0))
+        param = self.memory[instr.address + 1]
+
+        self._set_value(instr.p1_mode, param, value)
+
+        self.rip += 2  # Length of the instruction
+
+    def _do_output(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.output_list.append(value)
+
+        self.rip += 2  # Length of the instruction
+        raise OutputInterrupt  # Alert that we got an output to give
+
+    def _do_jump_if_true(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond != 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_jump_if_false(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond == 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_less_than(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs < rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_equal_to(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs == rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_change_relative_base(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.relative_base += value
+        self.rip += 2  # Length of the instruction
+
+
+class Tile(IntEnum):
+    EMPTY = 0
+    WALL = 1
+    BLOCK = 2
+    PADDLE = 3
+    BALL = 4
+
+
+def main() -> None:
+    memory = [int(n) for n in sys.stdin.read().split(",")]
+    memory[0] = 2  # Play for free
+    game = Computer(memory)
+
+    T = TypeVar("T")
+
+    def grouped(l: Iterable[T], n: int) -> Iterable[Tuple[T, ...]]:
+        return zip(*[iter(l)] * n)
+
+    paddle_pos = None
+    ball_pos = None
+    score = None
+    output_num = 0
+    while not game.is_halted:
+        try:
+            game.run()
+        except OutputInterrupt:
+            output_num += 1
+            if output_num < 3:  # Not processable yet
+                continue
+            x, y = game.output_list[0:2]
+            if x == -1 and y == 0:  # Score display
+                score = game.output_list[2]
+            else:
+                tile_type = Tile(game.output_list[2])
+                if tile_type == Tile.PADDLE:
+                    paddle_pos = x
+                elif tile_type == Tile.BALL:
+                    ball_pos = x
+            game.output_list.clear()  # Remove processed tiles
+            output_num = 0  # Reset count for next output
+        except InputInterrupt:
+            assert paddle_pos is not None and ball_pos is not None  # Sanity check
+            offset = ball_pos - paddle_pos
+            game.input_list.append(0 if offset == 0 else offset // abs(offset))
+
+    assert score is not None  # Sanity check
+    print(score)
+
+
+if __name__ == "__main__":
+    main()

2019/d14/ex1/ex1.py

@@ -0,0 +1,89 @@
+#!/usr/bin/env python
+
+import sys
+from dataclasses import dataclass
+from math import ceil
+from typing import Dict, List
+
+
+@dataclass
+class Ingredient:
+    name: str
+    quantity: int
+
+
+@dataclass
+class ReactionEquation:
+    quantity: int
+    inputs: List[Ingredient]
+
+
+Reactions = Dict[str, ReactionEquation]
+
+
+def solve_for(n: int, reactions: Reactions) -> int:
+    ore_needed = 0
+    wanted = [("FUEL", n)]
+    excess: Dict[str, int] = {}
+
+    def provide_ingredient(name: str, wanted_quantity: int) -> None:
+        nonlocal ore_needed
+        nonlocal excess
+        nonlocal wanted
+
+        if name == "ORE":
+            ore_needed += wanted_quantity  # There's no recipy for this one
+            return
+
+        if name in excess:
+            # Take from excess
+            if excess[name] > wanted_quantity:
+                excess[name] -= wanted_quantity
+                return  # Nothing left to do
+            wanted_quantity -= excess[name]
+            del excess[name]  # Took everything
+
+        if wanted_quantity == 0:  # In case we provided just enough by excess
+            return
+
+        equation = reactions[name]
+        reaction_num = ceil(wanted_quantity / equation.quantity)
+
+        for ingredient in equation.inputs:
+            needed_quantity = ingredient.quantity * reaction_num
+            provide_ingredient(ingredient.name, needed_quantity)
+
+        produced_quantity = equation.quantity * reaction_num
+        excess_quantity = produced_quantity - wanted_quantity
+        if excess_quantity > 0:
+            if name in excess:
+                excess[name] += excess_quantity
+            else:
+                excess[name] = excess_quantity
+
+    while len(wanted) != 0:
+        provide_ingredient(*(wanted.pop()))
+
+    return ore_needed
+
+
+def main() -> None:
+    reactions: Reactions = {}
+
+    def parse_react(l: str) -> None:
+        def parse_ingredient(i: str) -> Ingredient:
+            quantity, name = i.strip().split(" ")
+            return Ingredient(name, int(quantity))
+
+        input_list, output_str = l.split("=>")
+        inputs = [i for i in map(parse_ingredient, input_list.split(", "))]
+        output = parse_ingredient(output_str)
+        reactions[output.name] = ReactionEquation(output.quantity, inputs)
+
+    for line in sys.stdin.readlines():
+        parse_react(line)
+    print(solve_for(1, reactions))
+
+
+if __name__ == "__main__":
+    main()

2019/d14/ex1/input

@@ -0,0 +1,59 @@
+10 LSZLT, 29 XQJK => 4 BMRQJ
+22 HCKS => 1 GQKCZ
+1 HCKS, 8 WZWRV, 18 HVZR => 7 BGFR
+1 LSZLT, 1 WRKJ, 3 LJFP, 3 RNLPB, 1 NZGK, 3 LDSV, 5 RJDN, 8 HGFGC => 3 QZTXD
+1 BRSGQ, 1 XGLF, 1 ZHSK, 20 LSZLT, 16 WFCPT, 3 KTWV, 1 QRJC => 4 XPKX
+1 DCLR, 6 RNLPB => 5 HCKS
+1 HFHFV => 3 SHLMF
+2 LTMZQ, 21 FGCXN => 6 QKFKV
+3 BGFR => 7 WRKJ
+3 KHSB => 2 XQJL
+3 SHLMF => 2 LPLG
+12 SVHWT, 20 BXPSZ => 9 NBMF
+2 FGCXN, 32 DCSVN => 8 TBDWZ
+1 KHSB, 3 HGFGC => 6 WZWRV
+27 WFCPT, 4 KTWV, 14 BRSGQ, 1 MFNK, 1 WRKJ, 2 NZGK, 24 FBFLK => 5 TRLCK
+2 SVHWT => 3 QRJC
+1 MNVR, 1 FKBMW => 2 FGCXN
+4 GJXW => 9 JXFS
+3 XQJK => 5 WNJM
+1 WZVWZ, 1 XQJL => 9 SHKJV
+2 DCSVN => 4 HDVC
+2 GJXW => 2 RNLPB
+1 QKFKV, 1 PBRWB => 5 WTZQ
+14 QKFKV => 6 RDFTD
+166 ORE => 1 QDSXV
+2 DCSVN => 5 BXPSZ
+113 ORE => 6 LTMZQ
+13 MNVR => 7 RJDN
+2 NZGK, 9 XQJK, 18 WRKJ => 9 KTWV
+1 NZGK => 8 XQJK
+6 RZCGN, 6 HDVC, 1 DLKR => 9 DSLXW
+18 HVZR => 8 LJFP
+7 XQJL => 1 NPDS
+15 DLKR, 1 DSLXW, 26 MJFVP => 3 FBFLK
+125 ORE => 9 MNVR
+3 RJDN => 4 HFHFV
+1 TBDWZ, 1 DCLR => 2 HVZR
+2 SHKJV => 5 GJXW
+7 LTMZQ, 1 QDSXV, 1 FKBMW => 3 DCSVN
+9 LPLG, 11 JXFS => 3 BRSGQ
+5 JXFS, 1 ZHSK, 25 XGLF => 4 MFNK
+5 PBRWB => 2 SVHWT
+15 SHKJV => 5 XGLF
+1 XQJL, 2 NPDS => 4 DLKR
+39 JXFS => 5 KSHF
+6 GJXW, 1 FBFLK => 7 HGFGC
+3 JXFS => 1 LSZLT
+3 NBMF, 1 BMRQJ => 2 LDSV
+1 JXFS, 25 GJXW, 10 HGFGC => 4 NZGK
+8 QZTXD, 26 KSHF, 60 WNJM, 6 GJXW, 9 TRLCK, 20 XPKX, 21 FGCXN, 57 GQKCZ, 6 WRKJ => 1 FUEL
+4 SVHWT, 1 RZCGN => 3 ZHSK
+1 BXPSZ => 7 DCLR
+8 RDFTD, 1 SHKJV, 1 HFHFV => 6 MJFVP
+1 LTMZQ => 9 KHSB
+5 WTZQ, 4 HGFGC, 4 HCKS => 9 WFCPT
+184 ORE => 4 FKBMW
+4 XQJL => 3 WZVWZ
+12 QDSXV => 9 RZCGN
+1 FBFLK, 7 HVZR => 9 PBRWB

2019/d14/ex2/ex2.py

@@ -0,0 +1,106 @@
+#!/usr/bin/env python
+
+import sys
+from dataclasses import dataclass
+from math import ceil
+from typing import Dict, List
+
+
+@dataclass
+class Ingredient:
+    name: str
+    quantity: int
+
+
+@dataclass
+class ReactionEquation:
+    quantity: int
+    inputs: List[Ingredient]
+
+
+Reactions = Dict[str, ReactionEquation]
+
+
+def solve_for(n: int, reactions: Reactions) -> int:
+    ore_needed = 0
+    wanted = [("FUEL", n)]
+    excess: Dict[str, int] = {}
+
+    def provide_ingredient(name: str, wanted_quantity: int) -> None:
+        nonlocal ore_needed
+        nonlocal excess
+        nonlocal wanted
+
+        if name == "ORE":
+            ore_needed += wanted_quantity  # There's no recipy for this one
+            return
+
+        if name in excess:
+            # Take from excess
+            if excess[name] > wanted_quantity:
+                excess[name] -= wanted_quantity
+                return  # Nothing left to do
+            wanted_quantity -= excess[name]
+            del excess[name]  # Took everything
+
+        if wanted_quantity == 0:  # In case we provided just enough by excess
+            return
+
+        equation = reactions[name]
+        reaction_num = ceil(wanted_quantity / equation.quantity)
+
+        for ingredient in equation.inputs:
+            needed_quantity = ingredient.quantity * reaction_num
+            provide_ingredient(ingredient.name, needed_quantity)
+
+        produced_quantity = equation.quantity * reaction_num
+        excess_quantity = produced_quantity - wanted_quantity
+        if excess_quantity > 0:
+            if name in excess:
+                excess[name] += excess_quantity
+            else:
+                excess[name] = excess_quantity
+
+    while len(wanted) != 0:
+        provide_ingredient(*(wanted.pop()))
+
+    return ore_needed
+
+
+def main() -> None:
+    reactions: Reactions = {}
+
+    def parse_react(l: str) -> None:
+        def parse_ingredient(i: str) -> Ingredient:
+            quantity, name = i.strip().split(" ")
+            return Ingredient(name, int(quantity))
+
+        input_list, output_str = l.split("=>")
+        inputs = [i for i in map(parse_ingredient, input_list.split(", "))]
+        output = parse_ingredient(output_str)
+        reactions[output.name] = ReactionEquation(output.quantity, inputs)
+
+    for line in sys.stdin.readlines():
+        parse_react(line)
+
+    for_one = solve_for(1, reactions)
+    target = 1000000000000
+    # Educated guesses about minimum and maximum fuel needed to use 'target' ORE
+    min_fuel_needed = target // for_one
+    max_fuel_needed = 2 * min_fuel_needed
+    while min_fuel_needed < max_fuel_needed:
+        # We already know that minimum value is valid, offset it by one for the search
+        mid = ceil((min_fuel_needed + max_fuel_needed) / 2)
+        mid_res = solve_for(mid, reactions)
+        if mid_res > target:
+            # Exclude the maximum that was already searched
+            max_fuel_needed = mid - 1
+        else:
+            # Keep the valid minimum value
+            min_fuel_needed = mid
+
+    print(max_fuel_needed)
+
+
+if __name__ == "__main__":
+    main()

2019/d14/ex2/input

@@ -0,0 +1,59 @@
+10 LSZLT, 29 XQJK => 4 BMRQJ
+22 HCKS => 1 GQKCZ
+1 HCKS, 8 WZWRV, 18 HVZR => 7 BGFR
+1 LSZLT, 1 WRKJ, 3 LJFP, 3 RNLPB, 1 NZGK, 3 LDSV, 5 RJDN, 8 HGFGC => 3 QZTXD
+1 BRSGQ, 1 XGLF, 1 ZHSK, 20 LSZLT, 16 WFCPT, 3 KTWV, 1 QRJC => 4 XPKX
+1 DCLR, 6 RNLPB => 5 HCKS
+1 HFHFV => 3 SHLMF
+2 LTMZQ, 21 FGCXN => 6 QKFKV
+3 BGFR => 7 WRKJ
+3 KHSB => 2 XQJL
+3 SHLMF => 2 LPLG
+12 SVHWT, 20 BXPSZ => 9 NBMF
+2 FGCXN, 32 DCSVN => 8 TBDWZ
+1 KHSB, 3 HGFGC => 6 WZWRV
+27 WFCPT, 4 KTWV, 14 BRSGQ, 1 MFNK, 1 WRKJ, 2 NZGK, 24 FBFLK => 5 TRLCK
+2 SVHWT => 3 QRJC
+1 MNVR, 1 FKBMW => 2 FGCXN
+4 GJXW => 9 JXFS
+3 XQJK => 5 WNJM
+1 WZVWZ, 1 XQJL => 9 SHKJV
+2 DCSVN => 4 HDVC
+2 GJXW => 2 RNLPB
+1 QKFKV, 1 PBRWB => 5 WTZQ
+14 QKFKV => 6 RDFTD
+166 ORE => 1 QDSXV
+2 DCSVN => 5 BXPSZ
+113 ORE => 6 LTMZQ
+13 MNVR => 7 RJDN
+2 NZGK, 9 XQJK, 18 WRKJ => 9 KTWV
+1 NZGK => 8 XQJK
+6 RZCGN, 6 HDVC, 1 DLKR => 9 DSLXW
+18 HVZR => 8 LJFP
+7 XQJL => 1 NPDS
+15 DLKR, 1 DSLXW, 26 MJFVP => 3 FBFLK
+125 ORE => 9 MNVR
+3 RJDN => 4 HFHFV
+1 TBDWZ, 1 DCLR => 2 HVZR
+2 SHKJV => 5 GJXW
+7 LTMZQ, 1 QDSXV, 1 FKBMW => 3 DCSVN
+9 LPLG, 11 JXFS => 3 BRSGQ
+5 JXFS, 1 ZHSK, 25 XGLF => 4 MFNK
+5 PBRWB => 2 SVHWT
+15 SHKJV => 5 XGLF
+1 XQJL, 2 NPDS => 4 DLKR
+39 JXFS => 5 KSHF
+6 GJXW, 1 FBFLK => 7 HGFGC
+3 JXFS => 1 LSZLT
+3 NBMF, 1 BMRQJ => 2 LDSV
+1 JXFS, 25 GJXW, 10 HGFGC => 4 NZGK
+8 QZTXD, 26 KSHF, 60 WNJM, 6 GJXW, 9 TRLCK, 20 XPKX, 21 FGCXN, 57 GQKCZ, 6 WRKJ => 1 FUEL
+4 SVHWT, 1 RZCGN => 3 ZHSK
+1 BXPSZ => 7 DCLR
+8 RDFTD, 1 SHKJV, 1 HFHFV => 6 MJFVP
+1 LTMZQ => 9 KHSB
+5 WTZQ, 4 HGFGC, 4 HCKS => 9 WFCPT
+184 ORE => 4 FKBMW
+4 XQJL => 3 WZVWZ
+12 QDSXV => 9 RZCGN
+1 FBFLK, 7 HVZR => 9 PBRWB

2019/d15/ex1/ex1.py

@@ -0,0 +1,315 @@
+#!/usr/bin/env python
+
+import heapq
+import sys
+from dataclasses import dataclass, field
+from enum import Enum, IntEnum, auto
+from typing import List, NamedTuple, Optional, Set
+
+
+class ParameterMode(IntEnum):
+    POSITION = 0  # Acts on address
+    IMMEDIATE = 1  # Acts on the immediate value
+    RELATIVE = 2  # Acts on offset to relative base
+
+
+class Instruction(NamedTuple):
+    address: int  # The address of the instruction, for convenience
+    op: int  # The opcode
+    p1_mode: ParameterMode  # Which mode is the first parameter in
+    p2_mode: ParameterMode  # Which mode is the second parameter in
+    p3_mode: ParameterMode  # Which mode is the third parameter in
+
+
+def lookup_ops(index: int, memory: List[int]) -> Instruction:
+    digits = list(map(int, str(memory[index])))
+    a, b, c, d, e = [0] * (5 - len(digits)) + digits  # Pad with default values
+    return Instruction(
+        address=index,
+        op=d * 10 + e,
+        p1_mode=ParameterMode(c),
+        p2_mode=ParameterMode(b),
+        p3_mode=ParameterMode(a),
+    )
+
+
+class InputInterrupt(Exception):
+    pass
+
+
+class OutputInterrupt(Exception):
+    pass
+
+
+@dataclass
+class Computer:
+    memory: List[int]  # Memory space
+    rip: int = 0  # Instruction pointer
+    input_list: List[int] = field(default_factory=list)
+    output_list: List[int] = field(default_factory=list)
+    is_halted: bool = field(default=False, init=False)
+    relative_base: int = field(default=0, init=False)
+
+    def run(self) -> None:
+        while not self.is_halted:
+            self.run_single()
+
+    def run_no_output_interrupt(self) -> None:
+        while not self.is_halted:
+            try:
+                self.run_single()
+            except OutputInterrupt:
+                continue
+
+    def run_single(self):  # Returns True when halted
+        instr = lookup_ops(self.rip, self.memory)
+        if instr.op == 99:  # Halt
+            self.is_halted = True
+        elif instr.op == 1:  # Sum
+            self._do_addition(instr)
+        elif instr.op == 2:  # Multiplication
+            self._do_multiplication(instr)
+        elif instr.op == 3:  # Load from input
+            self._do_input(instr)
+        elif instr.op == 4:  # Store to output
+            self._do_output(instr)
+        elif instr.op == 5:  # Jump if true
+            self._do_jump_if_true(instr)
+        elif instr.op == 6:  # Jump if false
+            self._do_jump_if_false(instr)
+        elif instr.op == 7:  # Less than
+            self._do_less_than(instr)
+        elif instr.op == 8:  # Equal to
+            self._do_equal_to(instr)
+        elif instr.op == 9:  # Change relative base
+            self._do_change_relative_base(instr)
+        else:
+            assert False  # Sanity check
+
+    def _fill_to_addres(self, address: int) -> None:
+        values = address - len(self.memory) + 1
+        if values <= 0:
+            return
+        for __ in range(values):
+            self.memory.append(0)
+
+    def _get_value(self, mode: ParameterMode, val: int) -> int:
+        if mode == ParameterMode.POSITION:
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        elif mode == ParameterMode.RELATIVE:
+            val += self.relative_base
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        assert mode == ParameterMode.IMMEDIATE  # Sanity check
+        return val
+
+    def _set_value(self, mode: ParameterMode, address: int, value: int) -> None:
+        if mode == ParameterMode.RELATIVE:
+            address += self.relative_base
+        else:
+            assert mode == ParameterMode.POSITION  # Sanity check
+
+        assert address >= 0  # Sanity check
+        self._fill_to_addres(address)
+
+        self.memory[address] = value
+
+    def _do_addition(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs + rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_multiplication(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs * rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_input(self, instr: Instruction) -> None:
+        if len(self.input_list) == 0:
+            raise InputInterrupt  # No input, halt until an input is provided
+
+        value = int(self.input_list.pop(0))
+        param = self.memory[instr.address + 1]
+
+        self._set_value(instr.p1_mode, param, value)
+
+        self.rip += 2  # Length of the instruction
+
+    def _do_output(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.output_list.append(value)
+
+        self.rip += 2  # Length of the instruction
+        raise OutputInterrupt  # Alert that we got an output to give
+
+    def _do_jump_if_true(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond != 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_jump_if_false(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond == 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_less_than(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs < rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_equal_to(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs == rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_change_relative_base(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.relative_base += value
+        self.rip += 2  # Length of the instruction
+
+
+class Movement(IntEnum):
+    NORTH = 1
+    SOUTH = 2
+    WEST = 3
+    EAST = 4
+
+
+class StatusCode(IntEnum):
+    BLOCKED = 0
+    SUCCESS = 1
+    ON_TANK = 2
+
+
+class BlockType(Enum):
+    WALL = auto()
+    HALLWAY = auto()
+    OXYGEN_TANK = auto()
+
+
+class Coordinate(NamedTuple):
+    x: int
+    y: int
+
+
+@dataclass
+class GraphNode:
+    memory_state: Optional[List[int]]  # Only walls have no need for the memory state
+    block_type: BlockType
+    parent: Optional[Coordinate]  # Only the root of the exploration has no parent
+
+
+def coord_plus_dir(c: Coordinate, d: Movement) -> Coordinate:
+    offset = {
+        Movement.NORTH: Coordinate(0, 1),
+        Movement.SOUTH: Coordinate(0, -1),
+        Movement.WEST: Coordinate(-1, 0),
+        Movement.EAST: Coordinate(1, 0),
+    }
+    return Coordinate(*(a + b for (a, b) in zip(c, offset[d])))
+
+
+def move_to_opposite(d: Movement) -> Movement:
+    if d == Movement.NORTH:
+        return Movement.SOUTH
+    elif d == Movement.SOUTH:
+        return Movement.NORTH
+    elif d == Movement.WEST:
+        return Movement.EAST
+    else:
+        return Movement.WEST
+
+
+def main() -> None:
+    memory = [int(n) for n in sys.stdin.read().split(",")]
+    droid = Computer(memory)
+    block_map = {Coordinate(0, 0): BlockType.HALLWAY}
+
+    def dfs(p: Coordinate, direction: Movement) -> None:
+        end_coord = coord_plus_dir(p, direction)
+        if end_coord in block_map:
+            return  # Nothing to do
+
+        droid.input_list.append(int(direction))
+        try:
+            droid.run()
+        except OutputInterrupt:
+            status = StatusCode(droid.output_list.pop(0))
+            if status == StatusCode.BLOCKED:
+                block_map[end_coord] = BlockType.WALL
+                return  # Don't need to backtrack
+            block_map[end_coord] = (
+                BlockType.OXYGEN_TANK
+                if status == StatusCode.ON_TANK
+                else BlockType.HALLWAY
+            )
+            for d in Movement:
+                dfs(end_coord, d)
+            droid.input_list.append(int(move_to_opposite(direction)))
+            try:
+                droid.run()
+            except OutputInterrupt:
+                droid.output_list.pop(0)
+
+    for direction in Movement:
+        dfs(Coordinate(0, 0), direction)
+    assert len(droid.input_list) == 0 and len(droid.output_list) == 0  # Sanity check
+
+    block_map = {p: t for p, t in block_map.items() if t != BlockType.WALL}
+    oxygen_gen = (
+        pos for pos, block in block_map.items() if block == BlockType.OXYGEN_TANK
+    )
+    oxygen_pos = next(oxygen_gen)
+    assert next(oxygen_gen, None) is None  # Sanity check
+
+    seen: Set[Coordinate] = set()
+    to_visit = [(0, oxygen_pos)]
+
+    def find_shortest() -> int:
+        while True:
+            dist, pos = heapq.heappop(to_visit)
+            if pos == Coordinate(0, 0):
+                return dist
+            if pos in seen:
+                continue
+            if pos not in block_map:
+                continue
+            seen.add(pos)
+            for d in Movement:
+                new_pos = coord_plus_dir(pos, d)
+                heapq.heappush(to_visit, (dist + 1, new_pos))
+
+    print(find_shortest())
+
+
+if __name__ == "__main__":
+    main()

2019/d15/ex1/input

@@ -0,0 +1 @@
+3,1033,1008,1033,1,1032,1005,1032,31,1008,1033,2,1032,1005,1032,58,1008,1033,3,1032,1005,1032,81,1008,1033,4,1032,1005,1032,104,99,101,0,1034,1039,1001,1036,0,1041,1001,1035,-1,1040,1008,1038,0,1043,102,-1,1043,1032,1,1037,1032,1042,1105,1,124,1002,1034,1,1039,1001,1036,0,1041,1001,1035,1,1040,1008,1038,0,1043,1,1037,1038,1042,1106,0,124,1001,1034,-1,1039,1008,1036,0,1041,101,0,1035,1040,1001,1038,0,1043,1002,1037,1,1042,1105,1,124,1001,1034,1,1039,1008,1036,0,1041,1002,1035,1,1040,101,0,1038,1043,1001,1037,0,1042,1006,1039,217,1006,1040,217,1008,1039,40,1032,1005,1032,217,1008,1040,40,1032,1005,1032,217,1008,1039,33,1032,1006,1032,165,1008,1040,33,1032,1006,1032,165,1101,2,0,1044,1106,0,224,2,1041,1043,1032,1006,1032,179,1101,0,1,1044,1106,0,224,1,1041,1043,1032,1006,1032,217,1,1042,1043,1032,1001,1032,-1,1032,1002,1032,39,1032,1,1032,1039,1032,101,-1,1032,1032,101,252,1032,211,1007,0,68,1044,1106,0,224,1101,0,0,1044,1105,1,224,1006,1044,247,1002,1039,1,1034,102,1,1040,1035,1001,1041,0,1036,1002,1043,1,1038,1001,1042,0,1037,4,1044,1105,1,0,67,55,37,80,63,12,30,78,95,7,20,63,83,54,86,58,97,11,84,24,11,77,42,78,22,54,89,52,44,28,93,30,81,60,58,78,87,60,54,59,78,96,17,82,74,85,66,41,89,96,54,40,82,17,22,89,65,96,71,55,81,34,90,11,85,44,58,83,79,93,30,76,62,80,16,73,20,43,40,73,69,39,39,15,93,39,99,8,74,33,97,84,24,50,91,5,71,34,81,76,22,98,50,93,80,36,76,16,76,43,19,71,63,41,21,99,40,75,55,27,82,80,83,54,66,75,61,86,14,10,74,38,92,31,49,97,20,98,15,71,59,96,53,86,35,60,6,73,71,59,79,10,84,69,23,82,14,7,76,99,45,19,96,92,14,63,55,71,46,71,34,74,73,22,95,89,10,24,59,69,17,42,96,12,92,94,66,1,69,91,36,90,94,13,17,33,46,20,89,90,24,12,94,92,83,42,73,43,70,83,55,17,92,66,23,74,99,1,92,82,54,71,96,1,22,78,74,94,66,78,40,87,13,87,73,74,89,26,26,70,42,79,3,9,84,72,55,98,56,27,73,74,57,85,66,76,88,55,58,30,97,40,71,76,6,10,55,71,43,36,99,46,59,34,37,84,61,85,90,62,98,18,39,46,84,23,70,93,9,71,5,71,94,5,59,40,71,26,90,12,45,57,74,5,92,86,32,99,20,92,82,22,44,88,29,41,89,7,86,81,72,76,9,94,94,3,8,94,71,12,93,6,82,91,91,20,86,86,38,85,95,42,86,85,19,57,90,17,85,6,84,17,81,42,77,63,26,59,9,24,85,22,31,35,93,64,90,4,16,91,67,83,23,43,63,75,3,88,93,52,14,84,85,36,95,12,51,79,54,1,16,72,1,76,79,88,63,95,77,6,91,86,23,92,54,91,51,82,45,14,98,89,74,47,52,82,80,65,74,44,58,90,14,98,42,91,6,50,88,29,81,96,25,1,97,62,62,73,61,48,82,76,93,98,49,14,74,6,97,30,47,73,77,8,89,10,17,65,21,74,95,43,83,89,72,96,27,59,20,58,80,10,70,86,42,92,26,50,98,85,3,62,20,93,86,78,19,78,91,23,90,37,71,66,97,97,95,86,40,46,79,70,37,14,98,51,91,81,4,9,77,93,19,53,70,87,40,11,95,25,93,90,17,98,39,76,92,55,57,93,39,76,13,99,58,92,26,88,80,65,34,71,62,72,17,64,38,97,85,32,4,88,69,82,51,63,61,71,77,33,90,59,74,49,76,8,76,93,55,36,71,84,7,67,47,3,85,98,9,99,32,8,79,18,28,55,77,10,30,79,77,4,1,99,82,66,90,41,64,22,82,33,20,87,24,29,80,53,72,27,17,85,84,70,16,94,11,81,92,48,85,61,47,83,21,45,92,92,38,61,75,98,52,73,80,29,82,94,29,85,61,69,59,35,84,86,60,98,63,83,69,39,10,15,64,18,85,88,63,97,95,56,13,43,75,93,13,34,85,57,37,96,39,65,60,73,73,82,11,81,80,38,88,76,23,88,19,70,2,93,46,28,79,92,91,18,6,92,96,50,77,56,45,77,36,64,83,91,64,75,48,72,71,17,69,40,82,7,6,92,70,25,23,72,9,23,84,16,17,75,76,70,60,61,99,86,21,27,85,63,80,81,55,87,93,97,53,78,53,97,14,97,49,85,65,91,72,72,5,93,34,81,10,85,86,81,19,87,61,84,11,99,96,94,8,78,13,84,9,70,0,0,21,21,1,10,1,0,0,0,0,0,0

2019/d15/ex2/ex2.py

@@ -0,0 +1,318 @@
+#!/usr/bin/env python
+
+import heapq
+import sys
+from dataclasses import dataclass, field
+from enum import Enum, IntEnum, auto
+from typing import List, NamedTuple, Optional, Set
+
+
+class ParameterMode(IntEnum):
+    POSITION = 0  # Acts on address
+    IMMEDIATE = 1  # Acts on the immediate value
+    RELATIVE = 2  # Acts on offset to relative base
+
+
+class Instruction(NamedTuple):
+    address: int  # The address of the instruction, for convenience
+    op: int  # The opcode
+    p1_mode: ParameterMode  # Which mode is the first parameter in
+    p2_mode: ParameterMode  # Which mode is the second parameter in
+    p3_mode: ParameterMode  # Which mode is the third parameter in
+
+
+def lookup_ops(index: int, memory: List[int]) -> Instruction:
+    digits = list(map(int, str(memory[index])))
+    a, b, c, d, e = [0] * (5 - len(digits)) + digits  # Pad with default values
+    return Instruction(
+        address=index,
+        op=d * 10 + e,
+        p1_mode=ParameterMode(c),
+        p2_mode=ParameterMode(b),
+        p3_mode=ParameterMode(a),
+    )
+
+
+class InputInterrupt(Exception):
+    pass
+
+
+class OutputInterrupt(Exception):
+    pass
+
+
+@dataclass
+class Computer:
+    memory: List[int]  # Memory space
+    rip: int = 0  # Instruction pointer
+    input_list: List[int] = field(default_factory=list)
+    output_list: List[int] = field(default_factory=list)
+    is_halted: bool = field(default=False, init=False)
+    relative_base: int = field(default=0, init=False)
+
+    def run(self) -> None:
+        while not self.is_halted:
+            self.run_single()
+
+    def run_no_output_interrupt(self) -> None:
+        while not self.is_halted:
+            try:
+                self.run_single()
+            except OutputInterrupt:
+                continue
+
+    def run_single(self):  # Returns True when halted
+        instr = lookup_ops(self.rip, self.memory)
+        if instr.op == 99:  # Halt
+            self.is_halted = True
+        elif instr.op == 1:  # Sum
+            self._do_addition(instr)
+        elif instr.op == 2:  # Multiplication
+            self._do_multiplication(instr)
+        elif instr.op == 3:  # Load from input
+            self._do_input(instr)
+        elif instr.op == 4:  # Store to output
+            self._do_output(instr)
+        elif instr.op == 5:  # Jump if true
+            self._do_jump_if_true(instr)
+        elif instr.op == 6:  # Jump if false
+            self._do_jump_if_false(instr)
+        elif instr.op == 7:  # Less than
+            self._do_less_than(instr)
+        elif instr.op == 8:  # Equal to
+            self._do_equal_to(instr)
+        elif instr.op == 9:  # Change relative base
+            self._do_change_relative_base(instr)
+        else:
+            assert False  # Sanity check
+
+    def _fill_to_addres(self, address: int) -> None:
+        values = address - len(self.memory) + 1
+        if values <= 0:
+            return
+        for __ in range(values):
+            self.memory.append(0)
+
+    def _get_value(self, mode: ParameterMode, val: int) -> int:
+        if mode == ParameterMode.POSITION:
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        elif mode == ParameterMode.RELATIVE:
+            val += self.relative_base
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        assert mode == ParameterMode.IMMEDIATE  # Sanity check
+        return val
+
+    def _set_value(self, mode: ParameterMode, address: int, value: int) -> None:
+        if mode == ParameterMode.RELATIVE:
+            address += self.relative_base
+        else:
+            assert mode == ParameterMode.POSITION  # Sanity check
+
+        assert address >= 0  # Sanity check
+        self._fill_to_addres(address)
+
+        self.memory[address] = value
+
+    def _do_addition(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs + rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_multiplication(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs * rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_input(self, instr: Instruction) -> None:
+        if len(self.input_list) == 0:
+            raise InputInterrupt  # No input, halt until an input is provided
+
+        value = int(self.input_list.pop(0))
+        param = self.memory[instr.address + 1]
+
+        self._set_value(instr.p1_mode, param, value)
+
+        self.rip += 2  # Length of the instruction
+
+    def _do_output(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.output_list.append(value)
+
+        self.rip += 2  # Length of the instruction
+        raise OutputInterrupt  # Alert that we got an output to give
+
+    def _do_jump_if_true(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond != 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_jump_if_false(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond == 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_less_than(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs < rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_equal_to(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs == rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_change_relative_base(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.relative_base += value
+        self.rip += 2  # Length of the instruction
+
+
+class Movement(IntEnum):
+    NORTH = 1
+    SOUTH = 2
+    WEST = 3
+    EAST = 4
+
+
+class StatusCode(IntEnum):
+    BLOCKED = 0
+    SUCCESS = 1
+    ON_TANK = 2
+
+
+class BlockType(Enum):
+    WALL = auto()
+    HALLWAY = auto()
+    OXYGEN_TANK = auto()
+
+
+class Coordinate(NamedTuple):
+    x: int
+    y: int
+
+
+@dataclass
+class GraphNode:
+    memory_state: Optional[List[int]]  # Only walls have no need for the memory state
+    block_type: BlockType
+    parent: Optional[Coordinate]  # Only the root of the exploration has no parent
+
+
+def coord_plus_dir(c: Coordinate, d: Movement) -> Coordinate:
+    offset = {
+        Movement.NORTH: Coordinate(0, 1),
+        Movement.SOUTH: Coordinate(0, -1),
+        Movement.WEST: Coordinate(-1, 0),
+        Movement.EAST: Coordinate(1, 0),
+    }
+    return Coordinate(*(a + b for (a, b) in zip(c, offset[d])))
+
+
+def move_to_opposite(d: Movement) -> Movement:
+    if d == Movement.NORTH:
+        return Movement.SOUTH
+    elif d == Movement.SOUTH:
+        return Movement.NORTH
+    elif d == Movement.WEST:
+        return Movement.EAST
+    else:
+        return Movement.WEST
+
+
+def main() -> None:
+    memory = [int(n) for n in sys.stdin.read().split(",")]
+    droid = Computer(memory)
+    block_map = {Coordinate(0, 0): BlockType.HALLWAY}
+
+    def dfs(p: Coordinate, direction: Movement) -> None:
+        end_coord = coord_plus_dir(p, direction)
+        if end_coord in block_map:
+            return  # Nothing to do
+
+        droid.input_list.append(int(direction))
+        try:
+            droid.run()
+        except OutputInterrupt:
+            status = StatusCode(droid.output_list.pop(0))
+            if status == StatusCode.BLOCKED:
+                block_map[end_coord] = BlockType.WALL
+                return  # Don't need to backtrack
+            block_map[end_coord] = (
+                BlockType.OXYGEN_TANK
+                if status == StatusCode.ON_TANK
+                else BlockType.HALLWAY
+            )
+            for d in Movement:
+                dfs(end_coord, d)
+            droid.input_list.append(int(move_to_opposite(direction)))
+            try:
+                droid.run()
+            except OutputInterrupt:
+                droid.output_list.pop(0)
+
+    for direction in Movement:
+        dfs(Coordinate(0, 0), direction)
+    assert len(droid.input_list) == 0 and len(droid.output_list) == 0  # Sanity check
+
+    block_map = {p: t for p, t in block_map.items() if t != BlockType.WALL}
+    oxygen_gen = (
+        pos for pos, block in block_map.items() if block == BlockType.OXYGEN_TANK
+    )
+    oxygen_pos = next(oxygen_gen)
+    assert next(oxygen_gen, None) is None  # Sanity check
+
+    seen: Set[Coordinate] = set()
+    to_visit = [(0, oxygen_pos)]
+
+    max_dist = 0
+
+    def fill_oxygen() -> None:
+        nonlocal max_dist
+        while len(to_visit) != 0:
+            dist, pos = heapq.heappop(to_visit)
+            if pos in seen:
+                continue
+            if pos not in block_map:
+                continue
+            seen.add(pos)
+            max_dist = max(max_dist, dist)
+            for d in Movement:
+                new_pos = coord_plus_dir(pos, d)
+                heapq.heappush(to_visit, (dist + 1, new_pos))
+
+    fill_oxygen()
+    print(max_dist)
+
+
+if __name__ == "__main__":
+    main()

2019/d15/ex2/input

@@ -0,0 +1 @@
+3,1033,1008,1033,1,1032,1005,1032,31,1008,1033,2,1032,1005,1032,58,1008,1033,3,1032,1005,1032,81,1008,1033,4,1032,1005,1032,104,99,101,0,1034,1039,1001,1036,0,1041,1001,1035,-1,1040,1008,1038,0,1043,102,-1,1043,1032,1,1037,1032,1042,1105,1,124,1002,1034,1,1039,1001,1036,0,1041,1001,1035,1,1040,1008,1038,0,1043,1,1037,1038,1042,1106,0,124,1001,1034,-1,1039,1008,1036,0,1041,101,0,1035,1040,1001,1038,0,1043,1002,1037,1,1042,1105,1,124,1001,1034,1,1039,1008,1036,0,1041,1002,1035,1,1040,101,0,1038,1043,1001,1037,0,1042,1006,1039,217,1006,1040,217,1008,1039,40,1032,1005,1032,217,1008,1040,40,1032,1005,1032,217,1008,1039,33,1032,1006,1032,165,1008,1040,33,1032,1006,1032,165,1101,2,0,1044,1106,0,224,2,1041,1043,1032,1006,1032,179,1101,0,1,1044,1106,0,224,1,1041,1043,1032,1006,1032,217,1,1042,1043,1032,1001,1032,-1,1032,1002,1032,39,1032,1,1032,1039,1032,101,-1,1032,1032,101,252,1032,211,1007,0,68,1044,1106,0,224,1101,0,0,1044,1105,1,224,1006,1044,247,1002,1039,1,1034,102,1,1040,1035,1001,1041,0,1036,1002,1043,1,1038,1001,1042,0,1037,4,1044,1105,1,0,67,55,37,80,63,12,30,78,95,7,20,63,83,54,86,58,97,11,84,24,11,77,42,78,22,54,89,52,44,28,93,30,81,60,58,78,87,60,54,59,78,96,17,82,74,85,66,41,89,96,54,40,82,17,22,89,65,96,71,55,81,34,90,11,85,44,58,83,79,93,30,76,62,80,16,73,20,43,40,73,69,39,39,15,93,39,99,8,74,33,97,84,24,50,91,5,71,34,81,76,22,98,50,93,80,36,76,16,76,43,19,71,63,41,21,99,40,75,55,27,82,80,83,54,66,75,61,86,14,10,74,38,92,31,49,97,20,98,15,71,59,96,53,86,35,60,6,73,71,59,79,10,84,69,23,82,14,7,76,99,45,19,96,92,14,63,55,71,46,71,34,74,73,22,95,89,10,24,59,69,17,42,96,12,92,94,66,1,69,91,36,90,94,13,17,33,46,20,89,90,24,12,94,92,83,42,73,43,70,83,55,17,92,66,23,74,99,1,92,82,54,71,96,1,22,78,74,94,66,78,40,87,13,87,73,74,89,26,26,70,42,79,3,9,84,72,55,98,56,27,73,74,57,85,66,76,88,55,58,30,97,40,71,76,6,10,55,71,43,36,99,46,59,34,37,84,61,85,90,62,98,18,39,46,84,23,70,93,9,71,5,71,94,5,59,40,71,26,90,12,45,57,74,5,92,86,32,99,20,92,82,22,44,88,29,41,89,7,86,81,72,76,9,94,94,3,8,94,71,12,93,6,82,91,91,20,86,86,38,85,95,42,86,85,19,57,90,17,85,6,84,17,81,42,77,63,26,59,9,24,85,22,31,35,93,64,90,4,16,91,67,83,23,43,63,75,3,88,93,52,14,84,85,36,95,12,51,79,54,1,16,72,1,76,79,88,63,95,77,6,91,86,23,92,54,91,51,82,45,14,98,89,74,47,52,82,80,65,74,44,58,90,14,98,42,91,6,50,88,29,81,96,25,1,97,62,62,73,61,48,82,76,93,98,49,14,74,6,97,30,47,73,77,8,89,10,17,65,21,74,95,43,83,89,72,96,27,59,20,58,80,10,70,86,42,92,26,50,98,85,3,62,20,93,86,78,19,78,91,23,90,37,71,66,97,97,95,86,40,46,79,70,37,14,98,51,91,81,4,9,77,93,19,53,70,87,40,11,95,25,93,90,17,98,39,76,92,55,57,93,39,76,13,99,58,92,26,88,80,65,34,71,62,72,17,64,38,97,85,32,4,88,69,82,51,63,61,71,77,33,90,59,74,49,76,8,76,93,55,36,71,84,7,67,47,3,85,98,9,99,32,8,79,18,28,55,77,10,30,79,77,4,1,99,82,66,90,41,64,22,82,33,20,87,24,29,80,53,72,27,17,85,84,70,16,94,11,81,92,48,85,61,47,83,21,45,92,92,38,61,75,98,52,73,80,29,82,94,29,85,61,69,59,35,84,86,60,98,63,83,69,39,10,15,64,18,85,88,63,97,95,56,13,43,75,93,13,34,85,57,37,96,39,65,60,73,73,82,11,81,80,38,88,76,23,88,19,70,2,93,46,28,79,92,91,18,6,92,96,50,77,56,45,77,36,64,83,91,64,75,48,72,71,17,69,40,82,7,6,92,70,25,23,72,9,23,84,16,17,75,76,70,60,61,99,86,21,27,85,63,80,81,55,87,93,97,53,78,53,97,14,97,49,85,65,91,72,72,5,93,34,81,10,85,86,81,19,87,61,84,11,99,96,94,8,78,13,84,9,70,0,0,21,21,1,10,1,0,0,0,0,0,0

2019/d16/ex1/ex1.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+
+import sys
+from functools import reduce
+from itertools import chain, cycle
+from typing import Iterable, List
+
+
+def sequencer(pattern: List[int], n: int) -> Iterable[int]:
+    gen = cycle(list(chain(*([a] * n for a in pattern))))
+    next(gen)  # Skip the first one
+    yield from gen
+
+
+def main() -> None:
+    signal = [int(d) for d in sys.stdin.read().strip()]
+    base_pattern = [0, 1, 0, -1]
+
+    for __ in range(100):
+        signal = [
+            abs(sum(a * b for a, b in zip(signal, sequencer(base_pattern, i + 1)))) % 10
+            for i in range(len(signal))
+        ]
+
+    print(reduce(lambda a, b: a * 10 + b, signal[0:8]))
+
+
+if __name__ == "__main__":
+    main()

2019/d16/ex1/input

@@ -0,0 +1 @@
+59793513516782374825915243993822865203688298721919339628274587775705006728427921751430533510981343323758576985437451867752936052153192753660463974146842169169504066730474876587016668826124639010922391218906707376662919204980583671961374243713362170277231101686574078221791965458164785925384486127508173239563372833776841606271237694768938831709136453354321708319835083666223956618272981294631469954624760620412170069396383335680428214399523030064601263676270903213996956414287336234682903859823675958155009987384202594409175930384736760416642456784909043049471828143167853096088824339425988907292558707480725410676823614387254696304038713756368483311

2019/d16/ex2/ex2.py

@@ -0,0 +1,29 @@
+#!/usr/bin/env python
+
+import sys
+from functools import reduce
+from itertools import chain, cycle
+from typing import Iterable, List
+
+
+def main() -> None:
+    rep = 10000
+    signal = [int(d) for d in sys.stdin.read().strip()] * rep
+    offset = reduce(lambda a, b: a * 10 + b, signal[0:7])
+
+    assert offset >= len(signal) / 2  # Sanity check
+    # The trick is that the second half is only affected by itself (triangular matrix):
+    # For i > len(signal) / 2, new_signal[i] = sum(signal, i, len(signal))
+    # Therefore, we're only interested in numbers that start at the offset
+    signal = signal[offset:]  # Only take the end we need
+
+    for __ in range(100):
+        for i in range(len(signal) - 1, 0, -1):  # Do the sum from the end
+            signal[i - 1] += signal[i]
+            signal[i - 1] = signal[i - 1] % 10
+
+    print(reduce(lambda a, b: a * 10 + b, signal[:8]))
+
+
+if __name__ == "__main__":
+    main()

2019/d16/ex2/input

@@ -0,0 +1 @@
+59793513516782374825915243993822865203688298721919339628274587775705006728427921751430533510981343323758576985437451867752936052153192753660463974146842169169504066730474876587016668826124639010922391218906707376662919204980583671961374243713362170277231101686574078221791965458164785925384486127508173239563372833776841606271237694768938831709136453354321708319835083666223956618272981294631469954624760620412170069396383335680428214399523030064601263676270903213996956414287336234682903859823675958155009987384202594409175930384736760416642456784909043049471828143167853096088824339425988907292558707480725410676823614387254696304038713756368483311

2019/d17/ex1/ex1.py

@@ -0,0 +1,223 @@
+#!/usr/bin/env python
+
+
+import sys
+from dataclasses import dataclass, field
+from enum import IntEnum
+from typing import List, NamedTuple
+
+
+class ParameterMode(IntEnum):
+    POSITION = 0  # Acts on address
+    IMMEDIATE = 1  # Acts on the immediate value
+    RELATIVE = 2  # Acts on offset to relative base
+
+
+class Instruction(NamedTuple):
+    address: int  # The address of the instruction, for convenience
+    op: int  # The opcode
+    p1_mode: ParameterMode  # Which mode is the first parameter in
+    p2_mode: ParameterMode  # Which mode is the second parameter in
+    p3_mode: ParameterMode  # Which mode is the third parameter in
+
+
+def lookup_ops(index: int, memory: List[int]) -> Instruction:
+    digits = list(map(int, str(memory[index])))
+    a, b, c, d, e = [0] * (5 - len(digits)) + digits  # Pad with default values
+    return Instruction(
+        address=index,
+        op=d * 10 + e,
+        p1_mode=ParameterMode(c),
+        p2_mode=ParameterMode(b),
+        p3_mode=ParameterMode(a),
+    )
+
+
+class InputInterrupt(Exception):
+    pass
+
+
+class OutputInterrupt(Exception):
+    pass
+
+
+@dataclass
+class Computer:
+    memory: List[int]  # Memory space
+    rip: int = 0  # Instruction pointer
+    input_list: List[int] = field(default_factory=list)
+    output_list: List[int] = field(default_factory=list)
+    is_halted: bool = field(default=False, init=False)
+    relative_base: int = field(default=0, init=False)
+
+    def run(self) -> None:
+        while not self.is_halted:
+            self.run_single()
+
+    def run_no_output_interrupt(self) -> None:
+        while not self.is_halted:
+            try:
+                self.run_single()
+            except OutputInterrupt:
+                continue
+
+    def run_single(self):  # Returns True when halted
+        instr = lookup_ops(self.rip, self.memory)
+        if instr.op == 99:  # Halt
+            self.is_halted = True
+        elif instr.op == 1:  # Sum
+            self._do_addition(instr)
+        elif instr.op == 2:  # Multiplication
+            self._do_multiplication(instr)
+        elif instr.op == 3:  # Load from input
+            self._do_input(instr)
+        elif instr.op == 4:  # Store to output
+            self._do_output(instr)
+        elif instr.op == 5:  # Jump if true
+            self._do_jump_if_true(instr)
+        elif instr.op == 6:  # Jump if false
+            self._do_jump_if_false(instr)
+        elif instr.op == 7:  # Less than
+            self._do_less_than(instr)
+        elif instr.op == 8:  # Equal to
+            self._do_equal_to(instr)
+        elif instr.op == 9:  # Change relative base
+            self._do_change_relative_base(instr)
+        else:
+            assert False  # Sanity check
+
+    def _fill_to_addres(self, address: int) -> None:
+        values = address - len(self.memory) + 1
+        if values <= 0:
+            return
+        for __ in range(values):
+            self.memory.append(0)
+
+    def _get_value(self, mode: ParameterMode, val: int) -> int:
+        if mode == ParameterMode.POSITION:
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        elif mode == ParameterMode.RELATIVE:
+            val += self.relative_base
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        assert mode == ParameterMode.IMMEDIATE  # Sanity check
+        return val
+
+    def _set_value(self, mode: ParameterMode, address: int, value: int) -> None:
+        if mode == ParameterMode.RELATIVE:
+            address += self.relative_base
+        else:
+            assert mode == ParameterMode.POSITION  # Sanity check
+
+        assert address >= 0  # Sanity check
+        self._fill_to_addres(address)
+
+        self.memory[address] = value
+
+    def _do_addition(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs + rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_multiplication(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs * rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_input(self, instr: Instruction) -> None:
+        if len(self.input_list) == 0:
+            raise InputInterrupt  # No input, halt until an input is provided
+
+        value = int(self.input_list.pop(0))
+        param = self.memory[instr.address + 1]
+
+        self._set_value(instr.p1_mode, param, value)
+
+        self.rip += 2  # Length of the instruction
+
+    def _do_output(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.output_list.append(value)
+
+        self.rip += 2  # Length of the instruction
+        raise OutputInterrupt  # Alert that we got an output to give
+
+    def _do_jump_if_true(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond != 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_jump_if_false(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond == 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_less_than(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs < rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_equal_to(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs == rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_change_relative_base(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.relative_base += value
+        self.rip += 2  # Length of the instruction
+
+
+def main() -> None:
+    memory = [int(n) for n in sys.stdin.read().split(",")]
+    camera = Computer(memory)
+
+    camera.run_no_output_interrupt()
+
+    view = "".join(chr(c) for c in camera.output_list)
+    mapped_view = [[c for c in line] for line in view.split("\n") if line != ""]
+
+    def is_intersection(x: int, y: int) -> bool:
+        neighbors_and_point = ((x, y), (x - 1, y), (x + 1, y), (x, y - 1), (x, y + 1))
+        return all(mapped_view[a][b] not in (".", "X") for a, b in neighbors_and_point)
+
+    tot = 0
+    for x in range(1, len(mapped_view) - 1):
+        for y in range(1, len(mapped_view[0]) - 1):  # No need to look at the borders
+            if is_intersection(x, y):
+                tot += x * y
+
+    print(tot)
+
+
+if __name__ == "__main__":
+    main()

2019/d17/ex1/input

@@ -0,0 +1 @@
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2019/d17/ex2/ex2.py

@@ -0,0 +1,350 @@
+#!/usr/bin/env python
+
+
+import sys
+from copy import deepcopy
+from dataclasses import dataclass, field
+from enum import Enum, IntEnum, auto
+from typing import List, NamedTuple
+
+
+class ParameterMode(IntEnum):
+    POSITION = 0  # Acts on address
+    IMMEDIATE = 1  # Acts on the immediate value
+    RELATIVE = 2  # Acts on offset to relative base
+
+
+class Instruction(NamedTuple):
+    address: int  # The address of the instruction, for convenience
+    op: int  # The opcode
+    p1_mode: ParameterMode  # Which mode is the first parameter in
+    p2_mode: ParameterMode  # Which mode is the second parameter in
+    p3_mode: ParameterMode  # Which mode is the third parameter in
+
+
+def lookup_ops(index: int, memory: List[int]) -> Instruction:
+    digits = list(map(int, str(memory[index])))
+    a, b, c, d, e = [0] * (5 - len(digits)) + digits  # Pad with default values
+    return Instruction(
+        address=index,
+        op=d * 10 + e,
+        p1_mode=ParameterMode(c),
+        p2_mode=ParameterMode(b),
+        p3_mode=ParameterMode(a),
+    )
+
+
+class InputInterrupt(Exception):
+    pass
+
+
+class OutputInterrupt(Exception):
+    pass
+
+
+@dataclass
+class Computer:
+    memory: List[int]  # Memory space
+    rip: int = 0  # Instruction pointer
+    input_list: List[int] = field(default_factory=list)
+    output_list: List[int] = field(default_factory=list)
+    is_halted: bool = field(default=False, init=False)
+    relative_base: int = field(default=0, init=False)
+
+    def run(self) -> None:
+        while not self.is_halted:
+            self.run_single()
+
+    def run_no_output_interrupt(self) -> None:
+        while not self.is_halted:
+            try:
+                self.run_single()
+            except OutputInterrupt:
+                continue
+
+    def run_single(self):  # Returns True when halted
+        instr = lookup_ops(self.rip, self.memory)
+        if instr.op == 99:  # Halt
+            self.is_halted = True
+        elif instr.op == 1:  # Sum
+            self._do_addition(instr)
+        elif instr.op == 2:  # Multiplication
+            self._do_multiplication(instr)
+        elif instr.op == 3:  # Load from input
+            self._do_input(instr)
+        elif instr.op == 4:  # Store to output
+            self._do_output(instr)
+        elif instr.op == 5:  # Jump if true
+            self._do_jump_if_true(instr)
+        elif instr.op == 6:  # Jump if false
+            self._do_jump_if_false(instr)
+        elif instr.op == 7:  # Less than
+            self._do_less_than(instr)
+        elif instr.op == 8:  # Equal to
+            self._do_equal_to(instr)
+        elif instr.op == 9:  # Change relative base
+            self._do_change_relative_base(instr)
+        else:
+            assert False  # Sanity check
+
+    def _fill_to_addres(self, address: int) -> None:
+        values = address - len(self.memory) + 1
+        if values <= 0:
+            return
+        for __ in range(values):
+            self.memory.append(0)
+
+    def _get_value(self, mode: ParameterMode, val: int) -> int:
+        if mode == ParameterMode.POSITION:
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        elif mode == ParameterMode.RELATIVE:
+            val += self.relative_base
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        assert mode == ParameterMode.IMMEDIATE  # Sanity check
+        return val
+
+    def _set_value(self, mode: ParameterMode, address: int, value: int) -> None:
+        if mode == ParameterMode.RELATIVE:
+            address += self.relative_base
+        else:
+            assert mode == ParameterMode.POSITION  # Sanity check
+
+        assert address >= 0  # Sanity check
+        self._fill_to_addres(address)
+
+        self.memory[address] = value
+
+    def _do_addition(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs + rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_multiplication(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs * rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_input(self, instr: Instruction) -> None:
+        if len(self.input_list) == 0:
+            raise InputInterrupt  # No input, halt until an input is provided
+
+        value = int(self.input_list.pop(0))
+        param = self.memory[instr.address + 1]
+
+        self._set_value(instr.p1_mode, param, value)
+
+        self.rip += 2  # Length of the instruction
+
+    def _do_output(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.output_list.append(value)
+
+        self.rip += 2  # Length of the instruction
+        raise OutputInterrupt  # Alert that we got an output to give
+
+    def _do_jump_if_true(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond != 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_jump_if_false(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond == 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_less_than(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs < rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_equal_to(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs == rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_change_relative_base(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.relative_base += value
+        self.rip += 2  # Length of the instruction
+
+
+class Position(NamedTuple):
+    x: int
+    y: int
+
+
+class Direction(Enum):
+    NORTH = auto()
+    WEST = auto()
+    SOUTH = auto()
+    EAST = auto()
+
+
+DIRECTIONS = [d for d in Direction]
+ARROW_DIRECTION = {
+    "^": Direction.NORTH,
+    "v": Direction.SOUTH,
+    "<": Direction.WEST,
+    ">": Direction.EAST,
+}
+DIRECTION_OFFSET = {
+    Direction.NORTH: (-1, 0),
+    Direction.SOUTH: (1, 0),
+    Direction.WEST: (0, -1),
+    Direction.EAST: (0, 1),
+}
+
+
+def turn(d: Direction, turn: str) -> Direction:
+    def turn_left() -> Direction:
+        return DIRECTIONS[(DIRECTIONS.index(d) + 1) % len(DIRECTIONS)]
+
+    def turn_right() -> Direction:
+        return DIRECTIONS[DIRECTIONS.index(d) - 1]
+
+    if turn == "L":
+        return turn_left()
+    elif turn == "R":
+        return turn_right()
+    assert False  # Sanity check
+
+
+def find_arrow(mapped_view: List[List[str]]) -> Position:
+    for x in range(len(mapped_view)):
+        for y in range(len(mapped_view[0])):
+            if mapped_view[x][y] in ARROW_DIRECTION:
+                return Position(x, y)
+
+    assert False  # Sanity check
+
+
+def get_path(mapped_view: List[List[str]]) -> List[str]:
+    pos = find_arrow(mapped_view)
+
+    def pos_is_valid(p: Position) -> bool:
+        return 0 <= p.x < len(mapped_view) and 0 <= p.y < len(mapped_view[0])
+
+    def pos_is_scaffold(p: Position) -> bool:
+        return pos_is_valid(p) and mapped_view[p.x][p.y] != "."
+
+    direction = ARROW_DIRECTION[mapped_view[pos.x][pos.y]]
+    ans: List[str] = []
+
+    def advance_until_stopped(turn_string: str) -> bool:
+        nonlocal pos
+        nonlocal direction
+        d = turn(direction, turn_string)
+        offset = DIRECTION_OFFSET[d]
+        neighbor = Position(*(a + b for a, b in zip(pos, offset)))
+        tot = 0
+        while pos_is_scaffold(neighbor):
+            tot += 1
+            mapped_view[pos.x][pos.y] = "@"
+            pos = neighbor
+            neighbor = Position(*(a + b for a, b in zip(pos, offset)))
+
+        if tot == 0:
+            return False
+        direction = d
+        ans.append(turn_string)
+        ans.append(str(tot))
+        return True
+
+    has_no_neighbors = False
+    while not has_no_neighbors:
+        for turn_string in ("L", "R"):
+            if advance_until_stopped(turn_string):
+                break
+        else:
+            has_no_neighbors = True
+    return ans
+
+
+def sequitur_algorithm(path: str) -> None:
+    # FIXME: seems like a good candidate for compression
+    pass
+
+
+def main() -> None:
+    memory = [int(n) for n in sys.stdin.read().split(",")]
+    camera = Computer(deepcopy(memory))
+
+    camera.run_no_output_interrupt()
+
+    view = "".join(chr(c) for c in camera.output_list)
+    mapped_view = [[c for c in line] for line in view.split("\n") if line != ""]
+
+    path = get_path(mapped_view)
+    print(path)
+
+    # I didn't want to write the compression algorithm when I could just use Vim
+    # The answere is A,B,B,A,C,A,A,C,B,C
+    # A: R,8,L,12,R,8
+    # B: R,12,L,8,R,10
+    # C: R,8,L,8,L,8,R,8,R,10
+
+    ans = "A,B,B,A,C,A,A,C,B,C"
+    A = "R,8,L,12,R,8"
+    B = "R,12,L,8,R,10"
+    C = "R,8,L,8,L,8,R,8,R,10"
+
+    assert len(ans) <= 20  # Sanity check
+    assert len(A) <= 20  # Sanity check
+    assert len(B) <= 20  # Sanity check
+    assert len(C) <= 20  # Sanity check
+
+    memory[0] = 2  # Wake up the robot
+    robot = Computer(memory)
+
+    for c in ans:
+        robot.input_list.append(ord(c))
+    robot.input_list.append(ord("\n"))
+    for c in A:
+        robot.input_list.append(ord(c))
+    robot.input_list.append(ord("\n"))
+    for c in B:
+        robot.input_list.append(ord(c))
+    robot.input_list.append(ord("\n"))
+    for c in C:
+        robot.input_list.append(ord(c))
+    robot.input_list.append(ord("\n"))
+
+    for c in "n\n":  # Do not output the video feed
+        robot.input_list.append(ord(c))
+
+    robot.run_no_output_interrupt()
+    print(robot.output_list.pop())
+
+
+if __name__ == "__main__":
+    main()

2019/d17/ex2/input

@@ -0,0 +1 @@
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2019/d18/ex1/ex1.py

@@ -0,0 +1,129 @@
+#!/usr/bin/env python
+import heapq
+import sys
+from collections import defaultdict, deque
+from dataclasses import dataclass
+from functools import lru_cache
+from math import inf
+from typing import (DefaultDict, Deque, Dict, FrozenSet, Iterator, List, Tuple,
+                    Union)
+
+RawGrid = List[str]
+GraphInfo = List[Tuple[str, int]]
+Graph = Dict[str, GraphInfo]
+
+
+@dataclass(eq=True, frozen=True)  # Hash-able
+class Position:
+    x: int
+    y: int
+
+
+def neighbours(grid: RawGrid, pos: Position) -> Iterator[Position]:
+    for dx, dy in ((1, 0), (-1, 0), (0, 1), (0, -1)):
+        new_pos = Position(pos.x + dx, pos.y + dy)
+        if not (0 <= new_pos.x < len(grid) and 0 <= new_pos.y < len(grid[0])):
+            continue
+        if grid[new_pos.x][new_pos.y] == "#":
+            continue
+        yield new_pos
+
+
+def find_adjacent(grid: RawGrid, pos: Position) -> GraphInfo:
+    queue: Deque[Tuple[Position, int]] = deque()
+    visited = {pos}
+    adjacent: GraphInfo = []
+
+    for n in neighbours(grid, pos):
+        queue.append((n, 1))  # Distance is 1
+
+    while queue:
+        n, d = queue.popleft()
+        if n in visited:
+            continue
+        visited |= {n}
+        cell = grid[n.x][n.y]
+
+        if cell not in "#.@":  # We don't care about those
+            adjacent.append((cell, d))
+            continue  # Do not go through doors and keys
+
+        for neighbour in neighbours(grid, n):
+            queue.append((neighbour, d + 1))
+
+    return adjacent
+
+
+def build_graph(grid: RawGrid) -> Graph:
+    graph = {}
+
+    for x, row in enumerate(grid):
+        for y, cell in enumerate(row):
+            if cell not in "#.":
+                graph[cell] = find_adjacent(grid, Position(x, y))
+
+    return graph
+
+
+def solve(G: Graph, start: str) -> int:
+    @lru_cache(2 ** 20)
+    def reachable_keys(src: str, found: FrozenSet[str]) -> List[Tuple[str, int]]:
+        queue = []
+        distance: DefaultDict[str, Union[float, int]] = defaultdict(lambda: inf)
+        reachable: List[Tuple[str, int]] = []
+
+        for neighbor, weight in G[src]:
+            queue.append((weight, neighbor))  # Weight first for heap comparisons
+
+        heapq.heapify(queue)
+
+        while queue:
+            dist, node = heapq.heappop(queue)
+
+            # Do key, add it to reachable if not found previously
+            if node.islower() and node not in found:
+                reachable.append((node, dist))
+                continue
+
+            # Do door, if not opened by a key that was found in the search
+            if node.lower() not in found:
+                continue
+
+            # If not a key and not a closed door
+            for neighbor, weight in G[node]:
+                new_dist = dist + weight
+                if new_dist < distance[neighbor]:
+                    distance[neighbor] = new_dist
+                    heapq.heappush(queue, (new_dist, neighbor))
+
+        return reachable
+
+    @lru_cache(2 ** 20)
+    def min_steps(
+        src: str, keys_to_find: int, found: FrozenSet[str] = frozenset()
+    ) -> int:
+        if keys_to_find == 0:
+            return 0
+
+        best = inf
+
+        for key, dist in reachable_keys(src, found):
+            new_keys = found | {key}
+            dist += min_steps(key, keys_to_find - 1, new_keys)
+
+            if dist < best:
+                best = dist
+
+        return int(best)  # That way we throw if we kept the infinite float
+
+    total_keys = sum(node.islower() for node in G)
+    return min_steps(start, total_keys)
+
+
+def main() -> None:
+    G = build_graph(list(line.strip() for line in sys.stdin.readlines()))
+    print(solve(G, "@"))
+
+
+if __name__ == "__main__":
+    main()

2019/d18/ex1/input

@@ -0,0 +1,81 @@
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+#.#...#....x#.#.#.#z#.....#.....#.....#.#.....#...#...#...#.#...#.......#.#...#.#
+#.###.#####.#.#.#.#.#########.#########.#####.#######.#.###.#####.#######.#.#.#.#
+#k#.#.....#...#...#.#.....#...#.......#.#...#.#.......#.#...#.....#.#...#...#.#.#
+#.#.#####.###.#####.#.###.#.###.#####.#.#.#.#.#.#.#####.#.###.#####.#.#.#####.#H#
+#.#.....#...#.....#.#...#.#.#...#...#...#.#...#.#.#.....#.#...#...#...#...#.#.#.#
+#.#.###.###.#####.#.###.#.#.#.###.#.###.#.#######.#.###.#.#.###.#.#.###.#Y#.#.#.#
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+#####.###.#.###.#######.#####.#.#.#######.#####.###.###.#############.#####.###.#
+#...#.#...#.....#.....#.....#.#.#...#...#.......#.....#...#...........#.#...#...#
+#.#.#.###.#######.###.#######.#.###.#.###########.###.###.#.###########.#.###.###
+#.#.#.#.....#.#.....#.#.......#...#.#...#...#...#...#.#...#.......#...#.I.#.#...#
+#.#.#.#.###.#.#.###.#.#.#######.#.#.###.#.###.#.#.###.#.#########.###.#.###.###.#
+#.#.#.#.#...#s....#.#.#.......#a#.#.....#.#...#.#.#...#.....#.....#...#.....#.#.#
+#.###M#U###.#####.#.#.###.###.###.#####.#.#.###.#.#.#.#####.#.#####.#V#####.#.#.#
+#.....#...#...#...#.#...#...#.#...#....n#.#...#d..#.#.#.J.#...#.....#...#..w#.#.#
+#.#######.###.#####.###.#####.#.###.#####.###.#####.#.#.#.###.#####.#####.###.#.#
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+#######.#.#.###E#.###.#####.#.#.#.#.###.#.###.#.#.#####.#.#####.#.#############.#
+#.........#.......#.........C.#.#.......#.......#.......#.......#...............#
+#################################################################################

2019/d18/ex2/ex2.py

@@ -0,0 +1,131 @@
+#!/usr/bin/env python
+import heapq
+import sys
+from collections import defaultdict, deque
+from dataclasses import dataclass
+from functools import lru_cache
+from math import inf
+from typing import (DefaultDict, Deque, Dict, FrozenSet, Iterator, List, Tuple,
+                    Union)
+
+RawGrid = List[str]
+GraphInfo = List[Tuple[str, int]]
+Graph = Dict[str, GraphInfo]
+
+
+@dataclass(eq=True, frozen=True)  # Hash-able
+class Position:
+    x: int
+    y: int
+
+
+def neighbours(grid: RawGrid, pos: Position) -> Iterator[Position]:
+    for dx, dy in ((1, 0), (-1, 0), (0, 1), (0, -1)):
+        new_pos = Position(pos.x + dx, pos.y + dy)
+        if not (0 <= new_pos.x < len(grid) and 0 <= new_pos.y < len(grid[0])):
+            continue
+        if grid[new_pos.x][new_pos.y] == "#":
+            continue
+        yield new_pos
+
+
+def find_adjacent(grid: RawGrid, pos: Position) -> GraphInfo:
+    queue: Deque[Tuple[Position, int]] = deque()
+    visited = {pos}
+    adjacent: GraphInfo = []
+
+    for n in neighbours(grid, pos):
+        queue.append((n, 1))  # Distance is 1
+
+    while queue:
+        n, d = queue.popleft()
+        if n in visited:
+            continue
+        visited |= {n}
+        cell = grid[n.x][n.y]
+
+        if cell not in "#.1234":  # We don't care about those
+            adjacent.append((cell, d))
+            continue  # Do not go through doors and keys
+
+        for neighbour in neighbours(grid, n):
+            queue.append((neighbour, d + 1))
+
+    return adjacent
+
+
+def build_graph(grid: RawGrid) -> Graph:
+    graph = {}
+
+    for x, row in enumerate(grid):
+        for y, cell in enumerate(row):
+            if cell not in "#.":
+                graph[cell] = find_adjacent(grid, Position(x, y))
+
+    return graph
+
+
+def solve(G: Graph, start: str) -> int:
+    @lru_cache(2 ** 20)
+    def reachable_keys(src: str, found: FrozenSet[str]) -> GraphInfo:
+        queue = []
+        distance: DefaultDict[str, Union[float, int]] = defaultdict(lambda: inf)
+        reachable: GraphInfo = []
+
+        for neighbor, weight in G[src]:
+            queue.append((weight, neighbor))  # Weight first for heap comparisons
+
+        heapq.heapify(queue)
+
+        while queue:
+            dist, node = heapq.heappop(queue)
+
+            # Do key, add it to reachable if not found previously
+            if node.islower() and node not in found:
+                reachable.append((node, dist))
+                continue
+
+            # Do door, if not opened by a key that was found in the search
+            if node.lower() not in found:
+                continue
+
+            # If not a key and not a closed door
+            for neighbor, weight in G[node]:
+                new_dist = dist + weight
+                if new_dist < distance[neighbor]:
+                    distance[neighbor] = new_dist
+                    heapq.heappush(queue, (new_dist, neighbor))
+
+        return reachable
+
+    @lru_cache(2 ** 20)
+    def min_steps(
+        sources: str, keys_to_find: int, found: FrozenSet[str] = frozenset()
+    ) -> Union[float, int]:
+        if keys_to_find == 0:
+            return 0
+
+        best = inf
+
+        for src in sources:
+            for key, dist in reachable_keys(src, found):
+                new_keys = found | {key}
+                new_sources = sources.replace(src, key)
+                new_dist = dist + min_steps(new_sources, keys_to_find - 1, new_keys)
+
+                if new_dist < best:
+                    best = new_dist
+
+        return best
+
+    total_keys = sum(node.islower() for node in G)
+    return int(min_steps(start, total_keys))  # Throw if we kept the infinite float
+
+
+def main() -> None:
+    G = build_graph(list(line.strip() for line in sys.stdin.readlines()))
+    print(solve(G, "1234"))
+
+
+if __name__ == "__main__":
+    main()

2019/d18/ex2/input

@@ -0,0 +1,81 @@
+#################################################################################
+#.......#...#...#...........#.....#...#.#.....#m......#.......#.....#........u..#
+#####.#.#.#.#.#.###.#######.###.#.#.#.#.#.###.###.#####.#.###.###.#.###########.#
+#.....#...#...#.....#.#.....#...#...#...#.#....e#.......#...#.....#.....#.......#
+#.###################.#.#####.#########.#.#####.###########.###########.#.#######
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+#####.###.#.###.#######.#####.#.#.#######.#####.###.###.#############.#####.###.#
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+#.#.#.###.#######.###.#######.#.###.#.###########.###.###.#.###########.#.###.###
+#.#.#.#.....#.#.....#.#.......#...#.#...#...#...#...#.#...#.......#...#.I.#.#...#
+#.#.#.#.###.#.#.###.#.#.#######.#.#.###.#.###.#.#.###.#.#########.###.#.###.###.#
+#.#.#.#.#...#s....#.#.#.......#a#.#.....#.#...#.#.#...#.....#.....#...#.....#.#.#
+#.###M#U###.#####.#.#.###.###.###.#####.#.#.###.#.#.#.#####.#.#####.#V#####.#.#.#
+#.....#...#...#...#.#...#...#.#...#....n#.#...#d..#.#.#.J.#...#.....#...#..w#.#.#
+#.#######.###.#####.###.#####.#.###.#####.###.#####.#.#.#.###.#####.#####.###.#.#
+#.......#.#.#...#...#.#.....#.#...#.#...#...#.#.#...#.#.#.#...#...#...........#.#
+#######.#.#.###E#.###.#####.#.#.#.#.###.#.###.#.#.#####.#.#####.#.#############.#
+#.........#.......#.........C.#.#.......#.......#.......#.......#...............#
+#################################################################################

2019/d19/ex1/ex1.py

@@ -0,0 +1,214 @@
+#!/usr/bin/env python
+
+import sys
+from copy import deepcopy
+from dataclasses import dataclass, field
+from enum import IntEnum
+from itertools import product
+from typing import List, NamedTuple
+
+
+class ParameterMode(IntEnum):
+    POSITION = 0  # Acts on address
+    IMMEDIATE = 1  # Acts on the immediate value
+    RELATIVE = 2  # Acts on offset to relative base
+
+
+class Instruction(NamedTuple):
+    address: int  # The address of the instruction, for convenience
+    op: int  # The opcode
+    p1_mode: ParameterMode  # Which mode is the first parameter in
+    p2_mode: ParameterMode  # Which mode is the second parameter in
+    p3_mode: ParameterMode  # Which mode is the third parameter in
+
+
+def lookup_ops(index: int, memory: List[int]) -> Instruction:
+    digits = list(map(int, str(memory[index])))
+    a, b, c, d, e = [0] * (5 - len(digits)) + digits  # Pad with default values
+    return Instruction(
+        address=index,
+        op=d * 10 + e,
+        p1_mode=ParameterMode(c),
+        p2_mode=ParameterMode(b),
+        p3_mode=ParameterMode(a),
+    )
+
+
+class InputInterrupt(Exception):
+    pass
+
+
+class OutputInterrupt(Exception):
+    pass
+
+
+@dataclass
+class Computer:
+    memory: List[int]  # Memory space
+    rip: int = 0  # Instruction pointer
+    input_list: List[int] = field(default_factory=list)
+    output_list: List[int] = field(default_factory=list)
+    is_halted: bool = field(default=False, init=False)
+    relative_base: int = field(default=0, init=False)
+
+    def run(self) -> None:
+        while not self.is_halted:
+            self.run_single()
+
+    def run_no_output_interrupt(self) -> None:
+        while not self.is_halted:
+            try:
+                self.run_single()
+            except OutputInterrupt:
+                continue
+
+    def run_single(self) -> None:  # Returns True when halted
+        instr = lookup_ops(self.rip, self.memory)
+        if instr.op == 99:  # Halt
+            self.is_halted = True
+        elif instr.op == 1:  # Sum
+            self._do_addition(instr)
+        elif instr.op == 2:  # Multiplication
+            self._do_multiplication(instr)
+        elif instr.op == 3:  # Load from input
+            self._do_input(instr)
+        elif instr.op == 4:  # Store to output
+            self._do_output(instr)
+        elif instr.op == 5:  # Jump if true
+            self._do_jump_if_true(instr)
+        elif instr.op == 6:  # Jump if false
+            self._do_jump_if_false(instr)
+        elif instr.op == 7:  # Less than
+            self._do_less_than(instr)
+        elif instr.op == 8:  # Equal to
+            self._do_equal_to(instr)
+        elif instr.op == 9:  # Change relative base
+            self._do_change_relative_base(instr)
+        else:
+            assert False  # Sanity check
+
+    def _fill_to_addres(self, address: int) -> None:
+        values = address - len(self.memory) + 1
+        if values <= 0:
+            return
+        for __ in range(values):
+            self.memory.append(0)
+
+    def _get_value(self, mode: ParameterMode, val: int) -> int:
+        if mode == ParameterMode.POSITION:
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        elif mode == ParameterMode.RELATIVE:
+            val += self.relative_base
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        assert mode == ParameterMode.IMMEDIATE  # Sanity check
+        return val
+
+    def _set_value(self, mode: ParameterMode, address: int, value: int) -> None:
+        if mode == ParameterMode.RELATIVE:
+            address += self.relative_base
+        else:
+            assert mode == ParameterMode.POSITION  # Sanity check
+
+        assert address >= 0  # Sanity check
+        self._fill_to_addres(address)
+
+        self.memory[address] = value
+
+    def _do_addition(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs + rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_multiplication(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs * rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_input(self, instr: Instruction) -> None:
+        if len(self.input_list) == 0:
+            raise InputInterrupt  # No input, halt until an input is provided
+
+        value = int(self.input_list.pop(0))
+        param = self.memory[instr.address + 1]
+
+        self._set_value(instr.p1_mode, param, value)
+
+        self.rip += 2  # Length of the instruction
+
+    def _do_output(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.output_list.append(value)
+
+        self.rip += 2  # Length of the instruction
+        raise OutputInterrupt  # Alert that we got an output to give
+
+    def _do_jump_if_true(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond != 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_jump_if_false(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond == 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_less_than(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs < rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_equal_to(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs == rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_change_relative_base(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.relative_base += value
+        self.rip += 2  # Length of the instruction
+
+
+def main() -> None:
+    memory = [int(n) for n in sys.stdin.read().split(",")]
+
+    lines: List[List[int]] = [[0 for i in range(50)] for __ in range(50)]
+    for x, y in product(range(50), range(50)):
+        drone = Computer(deepcopy(memory), input_list=[x, y])
+        drone.run_no_output_interrupt()
+        assert len(drone.output_list) == 1
+        lines[x][y] = drone.output_list.pop()
+    print(sum(map(sum, lines)))
+
+
+if __name__ == "__main__":
+    main()

2019/d19/ex1/input

@@ -0,0 +1 @@
+109,424,203,1,21102,11,1,0,1106,0,282,21102,18,1,0,1106,0,259,1201,1,0,221,203,1,21102,31,1,0,1106,0,282,21101,38,0,0,1106,0,259,21002,23,1,2,22102,1,1,3,21101,1,0,1,21102,57,1,0,1105,1,303,2102,1,1,222,20101,0,221,3,20101,0,221,2,21102,259,1,1,21101,80,0,0,1106,0,225,21101,0,44,2,21102,91,1,0,1105,1,303,1201,1,0,223,20101,0,222,4,21101,0,259,3,21102,225,1,2,21101,225,0,1,21102,118,1,0,1105,1,225,21002,222,1,3,21101,100,0,2,21101,133,0,0,1105,1,303,21202,1,-1,1,22001,223,1,1,21101,148,0,0,1106,0,259,2102,1,1,223,20102,1,221,4,21002,222,1,3,21102,1,12,2,1001,132,-2,224,1002,224,2,224,1001,224,3,224,1002,132,-1,132,1,224,132,224,21001,224,1,1,21102,1,195,0,106,0,108,20207,1,223,2,21002,23,1,1,21102,-1,1,3,21101,0,214,0,1105,1,303,22101,1,1,1,204,1,99,0,0,0,0,109,5,2102,1,-4,249,21201,-3,0,1,22101,0,-2,2,22101,0,-1,3,21101,0,250,0,1105,1,225,22102,1,1,-4,109,-5,2106,0,0,109,3,22107,0,-2,-1,21202,-1,2,-1,21201,-1,-1,-1,22202,-1,-2,-2,109,-3,2106,0,0,109,3,21207,-2,0,-1,1206,-1,294,104,0,99,21202,-2,1,-2,109,-3,2105,1,0,109,5,22207,-3,-4,-1,1206,-1,346,22201,-4,-3,-4,21202,-3,-1,-1,22201,-4,-1,2,21202,2,-1,-1,22201,-4,-1,1,22102,1,-2,3,21101,0,343,0,1105,1,303,1105,1,415,22207,-2,-3,-1,1206,-1,387,22201,-3,-2,-3,21202,-2,-1,-1,22201,-3,-1,3,21202,3,-1,-1,22201,-3,-1,2,21201,-4,0,1,21101,0,384,0,1106,0,303,1106,0,415,21202,-4,-1,-4,22201,-4,-3,-4,22202,-3,-2,-2,22202,-2,-4,-4,22202,-3,-2,-3,21202,-4,-1,-2,22201,-3,-2,1,22102,1,1,-4,109,-5,2106,0,0

2019/d19/ex2/ex2.py

@@ -0,0 +1,221 @@
+#!/usr/bin/env python
+
+import sys
+from copy import deepcopy
+from dataclasses import dataclass, field
+from enum import IntEnum
+from typing import Iterator, List, NamedTuple, Tuple
+
+
+class ParameterMode(IntEnum):
+    POSITION = 0  # Acts on address
+    IMMEDIATE = 1  # Acts on the immediate value
+    RELATIVE = 2  # Acts on offset to relative base
+
+
+class Instruction(NamedTuple):
+    address: int  # The address of the instruction, for convenience
+    op: int  # The opcode
+    p1_mode: ParameterMode  # Which mode is the first parameter in
+    p2_mode: ParameterMode  # Which mode is the second parameter in
+    p3_mode: ParameterMode  # Which mode is the third parameter in
+
+
+def lookup_ops(index: int, memory: List[int]) -> Instruction:
+    digits = list(map(int, str(memory[index])))
+    a, b, c, d, e = [0] * (5 - len(digits)) + digits  # Pad with default values
+    return Instruction(
+        address=index,
+        op=d * 10 + e,
+        p1_mode=ParameterMode(c),
+        p2_mode=ParameterMode(b),
+        p3_mode=ParameterMode(a),
+    )
+
+
+class InputInterrupt(Exception):
+    pass
+
+
+class OutputInterrupt(Exception):
+    pass
+
+
+@dataclass
+class Computer:
+    memory: List[int]  # Memory space
+    rip: int = 0  # Instruction pointer
+    input_list: List[int] = field(default_factory=list)
+    output_list: List[int] = field(default_factory=list)
+    is_halted: bool = field(default=False, init=False)
+    relative_base: int = field(default=0, init=False)
+
+    def run(self) -> None:
+        while not self.is_halted:
+            self.run_single()
+
+    def run_no_output_interrupt(self) -> None:
+        while not self.is_halted:
+            try:
+                self.run_single()
+            except OutputInterrupt:
+                continue
+
+    def run_single(self) -> None:  # Returns True when halted
+        instr = lookup_ops(self.rip, self.memory)
+        if instr.op == 99:  # Halt
+            self.is_halted = True
+        elif instr.op == 1:  # Sum
+            self._do_addition(instr)
+        elif instr.op == 2:  # Multiplication
+            self._do_multiplication(instr)
+        elif instr.op == 3:  # Load from input
+            self._do_input(instr)
+        elif instr.op == 4:  # Store to output
+            self._do_output(instr)
+        elif instr.op == 5:  # Jump if true
+            self._do_jump_if_true(instr)
+        elif instr.op == 6:  # Jump if false
+            self._do_jump_if_false(instr)
+        elif instr.op == 7:  # Less than
+            self._do_less_than(instr)
+        elif instr.op == 8:  # Equal to
+            self._do_equal_to(instr)
+        elif instr.op == 9:  # Change relative base
+            self._do_change_relative_base(instr)
+        else:
+            assert False  # Sanity check
+
+    def _fill_to_addres(self, address: int) -> None:
+        values = address - len(self.memory) + 1
+        if values <= 0:
+            return
+        for __ in range(values):
+            self.memory.append(0)
+
+    def _get_value(self, mode: ParameterMode, val: int) -> int:
+        if mode == ParameterMode.POSITION:
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        elif mode == ParameterMode.RELATIVE:
+            val += self.relative_base
+            assert 0 <= val  # Sanity check
+            self._fill_to_addres(val)
+            return self.memory[val]
+        assert mode == ParameterMode.IMMEDIATE  # Sanity check
+        return val
+
+    def _set_value(self, mode: ParameterMode, address: int, value: int) -> None:
+        if mode == ParameterMode.RELATIVE:
+            address += self.relative_base
+        else:
+            assert mode == ParameterMode.POSITION  # Sanity check
+
+        assert address >= 0  # Sanity check
+        self._fill_to_addres(address)
+
+        self.memory[address] = value
+
+    def _do_addition(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs + rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_multiplication(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, lhs * rhs)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_input(self, instr: Instruction) -> None:
+        if len(self.input_list) == 0:
+            raise InputInterrupt  # No input, halt until an input is provided
+
+        value = int(self.input_list.pop(0))
+        param = self.memory[instr.address + 1]
+
+        self._set_value(instr.p1_mode, param, value)
+
+        self.rip += 2  # Length of the instruction
+
+    def _do_output(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.output_list.append(value)
+
+        self.rip += 2  # Length of the instruction
+        raise OutputInterrupt  # Alert that we got an output to give
+
+    def _do_jump_if_true(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond != 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_jump_if_false(self, instr: Instruction) -> None:
+        cond = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        value = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+
+        if cond == 0:
+            self.rip = value
+        else:
+            self.rip += 3  # Length of the instruction
+
+    def _do_less_than(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs < rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_equal_to(self, instr: Instruction) -> None:
+        lhs = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+        rhs = self._get_value(instr.p2_mode, self.memory[instr.address + 2])
+        dest = self.memory[instr.address + 3]
+
+        self._set_value(instr.p3_mode, dest, 1 if lhs == rhs else 0)
+
+        self.rip += 4  # Length of the instruction
+
+    def _do_change_relative_base(self, instr: Instruction) -> None:
+        value = self._get_value(instr.p1_mode, self.memory[instr.address + 1])
+
+        self.relative_base += value
+        self.rip += 2  # Length of the instruction
+
+
+def true_at(memory: List[int], x: int, y: int) -> bool:
+    drone = Computer(deepcopy(memory), input_list=[x, y])
+    drone.run_no_output_interrupt()
+    assert len(drone.output_list) == 1
+    return drone.output_list.pop() == 1
+
+
+def main() -> None:
+    memory = [int(n) for n in sys.stdin.read().split(",")]
+
+    x = 0
+    y = 0
+    size = 100
+    while not true_at(memory, x + size - 1, y):
+        y += 1
+        while not true_at(memory, x, y + size - 1):
+            x += 1
+    print((x * 10000 + y))
+
+
+if __name__ == "__main__":
+    main()

2019/d19/ex2/input

@@ -0,0 +1 @@
+109,424,203,1,21102,11,1,0,1106,0,282,21102,18,1,0,1106,0,259,1201,1,0,221,203,1,21102,31,1,0,1106,0,282,21101,38,0,0,1106,0,259,21002,23,1,2,22102,1,1,3,21101,1,0,1,21102,57,1,0,1105,1,303,2102,1,1,222,20101,0,221,3,20101,0,221,2,21102,259,1,1,21101,80,0,0,1106,0,225,21101,0,44,2,21102,91,1,0,1105,1,303,1201,1,0,223,20101,0,222,4,21101,0,259,3,21102,225,1,2,21101,225,0,1,21102,118,1,0,1105,1,225,21002,222,1,3,21101,100,0,2,21101,133,0,0,1105,1,303,21202,1,-1,1,22001,223,1,1,21101,148,0,0,1106,0,259,2102,1,1,223,20102,1,221,4,21002,222,1,3,21102,1,12,2,1001,132,-2,224,1002,224,2,224,1001,224,3,224,1002,132,-1,132,1,224,132,224,21001,224,1,1,21102,1,195,0,106,0,108,20207,1,223,2,21002,23,1,1,21102,-1,1,3,21101,0,214,0,1105,1,303,22101,1,1,1,204,1,99,0,0,0,0,109,5,2102,1,-4,249,21201,-3,0,1,22101,0,-2,2,22101,0,-1,3,21101,0,250,0,1105,1,225,22102,1,1,-4,109,-5,2106,0,0,109,3,22107,0,-2,-1,21202,-1,2,-1,21201,-1,-1,-1,22202,-1,-2,-2,109,-3,2106,0,0,109,3,21207,-2,0,-1,1206,-1,294,104,0,99,21202,-2,1,-2,109,-3,2105,1,0,109,5,22207,-3,-4,-1,1206,-1,346,22201,-4,-3,-4,21202,-3,-1,-1,22201,-4,-1,2,21202,2,-1,-1,22201,-4,-1,1,22102,1,-2,3,21101,0,343,0,1105,1,303,1105,1,415,22207,-2,-3,-1,1206,-1,387,22201,-3,-2,-3,21202,-2,-1,-1,22201,-3,-1,3,21202,3,-1,-1,22201,-3,-1,2,21201,-4,0,1,21101,0,384,0,1106,0,303,1106,0,415,21202,-4,-1,-4,22201,-4,-3,-4,22202,-3,-2,-2,22202,-2,-4,-4,22202,-3,-2,-3,21202,-4,-1,-2,22201,-3,-2,1,22102,1,1,-4,109,-5,2106,0,0

2020/d01/ex1/ex1.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+import functools
+import itertools
+import operator
+import sys
+
+
+def main() -> None:
+    values = [int(n) for n in sys.stdin.readlines()]
+    for tup in itertools.combinations(values, 2):
+        if sum(tup) == 2020:
+            print(functools.reduce(operator.mul, tup))
+            break
+
+
+if __name__ == "__main__":
+    main()

2020/d01/ex1/input

@@ -0,0 +1,200 @@
+1742
+1763
+1238
+1424
+1736
+1903
+1580
+1847
+1860
+1933
+1779
+1901
+1984
+1861
+1769
+1896
+1428
+2010
+1673
+1491
+1996
+1746
+1973
+1696
+1616
+2006
+1890
+1600
+1991
+1724
+1804
+1794
+462
+1706
+2002
+1939
+1834
+1312
+1943
+1465
+1405
+1459
+1659
+1288
+1241
+1935
+1294
+1388
+1772
+1945
+1649
+813
+1956
+1274
+1686
+1404
+1770
+1631
+1366
+1321
+1353
+1685
+1365
+1738
+1911
+1235
+1495
+1837
+1456
+1283
+1929
+1326
+1735
+1604
+1223
+1261
+1844
+1850
+1429
+277
+1848
+1818
+1395
+1522
+1863
+1475
+1562
+1351
+1538
+1313
+1416
+1690
+1539
+1338
+1982
+1297
+1821
+780
+1859
+1420
+1934
+1303
+1731
+1714
+1702
+1417
+1872
+1998
+1908
+1957
+1270
+1359
+1760
+1997
+1773
+2000
+1203
+1880
+1955
+1273
+1775
+1893
+1237
+1707
+1885
+1900
+1801
+1367
+1561
+1524
+1678
+1511
+1623
+1464
+1477
+1733
+1423
+1575
+1851
+2007
+1651
+804
+1836
+1849
+1713
+1401
+1502
+1806
+1506
+1646
+1968
+1253
+1889
+1759
+1734
+1611
+1558
+1256
+1657
+1778
+1953
+1578
+1717
+1498
+1381
+1919
+1512
+1391
+384
+1802
+1573
+1940
+1323
+2003
+1689
+1936
+1368
+1962
+1964
+1586
+1619
+1482
+1445
+372
+1792
+96
+1468
+1999
+1301
+1757
+1613
+1807
+1941
+1642
+1557
+1884
+1626
+489
+1989
+1327

2020/d01/ex2/ex2.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+import functools
+import itertools
+import operator
+import sys
+
+
+def main() -> None:
+    values = [int(n) for n in sys.stdin.readlines()]
+    for tup in itertools.combinations(values, 3):
+        if sum(tup) == 2020:
+            print(functools.reduce(operator.mul, tup))
+            break
+
+
+if __name__ == "__main__":
+    main()

2020/d01/ex2/input

@@ -0,0 +1,200 @@
+1742
+1763
+1238
+1424
+1736
+1903
+1580
+1847
+1860
+1933
+1779
+1901
+1984
+1861
+1769
+1896
+1428
+2010
+1673
+1491
+1996
+1746
+1973
+1696
+1616
+2006
+1890
+1600
+1991
+1724
+1804
+1794
+462
+1706
+2002
+1939
+1834
+1312
+1943
+1465
+1405
+1459
+1659
+1288
+1241
+1935
+1294
+1388
+1772
+1945
+1649
+813
+1956
+1274
+1686
+1404
+1770
+1631
+1366
+1321
+1353
+1685
+1365
+1738
+1911
+1235
+1495
+1837
+1456
+1283
+1929
+1326
+1735
+1604
+1223
+1261
+1844
+1850
+1429
+277
+1848
+1818
+1395
+1522
+1863
+1475
+1562
+1351
+1538
+1313
+1416
+1690
+1539
+1338
+1982
+1297
+1821
+780
+1859
+1420
+1934
+1303
+1731
+1714
+1702
+1417
+1872
+1998
+1908
+1957
+1270
+1359
+1760
+1997
+1773
+2000
+1203
+1880
+1955
+1273
+1775
+1893
+1237
+1707
+1885
+1900
+1801
+1367
+1561
+1524
+1678
+1511
+1623
+1464
+1477
+1733
+1423
+1575
+1851
+2007
+1651
+804
+1836
+1849
+1713
+1401
+1502
+1806
+1506
+1646
+1968
+1253
+1889
+1759
+1734
+1611
+1558
+1256
+1657
+1778
+1953
+1578
+1717
+1498
+1381
+1919
+1512
+1391
+384
+1802
+1573
+1940
+1323
+2003
+1689
+1936
+1368
+1962
+1964
+1586
+1619
+1482
+1445
+372
+1792
+96
+1468
+1999
+1301
+1757
+1613
+1807
+1941
+1642
+1557
+1884
+1626
+489
+1989
+1327

2020/d02/ex1/ex1.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python
+
+import re
+import sys
+from dataclasses import dataclass
+from typing import List
+
+
+@dataclass
+class Policy:
+    min: int
+    max: int
+    letter: str
+
+
+@dataclass
+class Password:
+    policy: Policy
+    password: str
+
+
+def is_valid(pwd: Password) -> bool:
+    occurences = pwd.password.count(pwd.policy.letter)
+    return pwd.policy.min <= occurences <= pwd.policy.max
+
+
+def solve(passwords: List[Password]) -> int:
+    return sum(map(is_valid, passwords))
+
+
+def main() -> None:
+    pattern = re.compile("([0-9]+)-([0-9]+) (.): (.+)")
+    input = [
+        Password(Policy(int(m.group(1)), int(m.group(2)), m.group(3)), m.group(4))
+        for m in (pattern.match(line) for line in sys.stdin.readlines())
+        if m
+    ]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d02/ex2/ex2.py

@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+
+import re
+import sys
+from dataclasses import dataclass
+from typing import List
+
+
+@dataclass
+class Policy:
+    min: int
+    max: int
+    letter: str
+
+
+@dataclass
+class Password:
+    policy: Policy
+    password: str
+
+
+def is_valid(pwd: Password) -> bool:
+    min = pwd.password[pwd.policy.min - 1] == pwd.policy.letter
+    max = pwd.password[pwd.policy.max - 1] == pwd.policy.letter
+    return min ^ max
+
+
+def solve(passwords: List[Password]) -> int:
+    return sum(map(is_valid, passwords))
+
+
+def main() -> None:
+    pattern = re.compile("([0-9]+)-([0-9]+) (.): (.+)")
+    input = [
+        Password(Policy(int(m.group(1)), int(m.group(2)), m.group(3)), m.group(4))
+        for m in (pattern.match(line) for line in sys.stdin.readlines())
+        if m
+    ]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d03/ex1/ex1.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+import sys
+from typing import List, Tuple
+
+
+def solve(trees: List[str], delta: Tuple[int, int]) -> int:
+    x, y = 0, 0
+    sum = 0
+    while True:
+        x += delta[0]
+        y += delta[1]
+        if y >= len(trees):
+            break
+        sum += trees[y][x % len(trees[0])] == "#"
+    return sum
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input, (3, 1)))
+
+
+if __name__ == "__main__":
+    main()

2020/d03/ex1/input

@@ -0,0 +1,323 @@
+...............#.#.............
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2020/d03/ex2/ex2.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+
+import sys
+from math import prod
+from typing import List, Tuple
+
+
+def solve(trees: List[str], delta: Tuple[int, int]) -> int:
+    x, y = 0, 0
+    sum = 0
+    while True:
+        x += delta[0]
+        y += delta[1]
+        if y >= len(trees):
+            break
+        sum += trees[y][x % len(trees[0])] == "#"
+    return sum
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    deltas = [
+        (1, 1),
+        (3, 1),
+        (5, 1),
+        (7, 1),
+        (1, 2),
+    ]
+    print(prod(solve(input, delt) for delt in deltas))
+
+
+if __name__ == "__main__":
+    main()

2020/d03/ex2/input

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2020/d04/ex1/ex1.py

@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+
+import sys
+from typing import List
+
+
+def validate(passport: List[str]) -> int:
+    fields = [
+        "byr",
+        "iyr",
+        "eyr",
+        "hgt",
+        "hcl",
+        "ecl",
+        "pid",
+    ]
+    for field in fields:
+        if field not in passport:
+            return False
+    return True
+
+
+def solve(passport_fields: List[List[str]]) -> int:
+    return sum(validate(passport) for passport in passport_fields)
+
+
+def main() -> None:
+    passports: List[List[str]] = [[]]
+    for line in sys.stdin:
+        if line == "\n" or line == "":
+            passports.append([])
+            continue
+        passports[-1] += [s.split(":")[0] for s in line.split(" ")]
+    print(solve(passports))
+
+
+if __name__ == "__main__":
+    main()

2020/d04/ex2/ex2.py

@@ -0,0 +1,109 @@
+#!/usr/bin/env python
+
+import re
+import sys
+from typing import List, Tuple
+
+Field = Tuple[str, ...]
+
+
+def validate_byr(field: str) -> bool:
+    pattern = "^[0-9]{4}$"
+    if not re.fullmatch(pattern, field):
+        return False
+    val = int(field)
+    return 1920 <= val <= 2002
+
+
+def validate_iyr(field: str) -> bool:
+    pattern = "^[0-9]{4}$"
+    if not re.fullmatch(pattern, field):
+        return False
+    val = int(field)
+    return 2010 <= val <= 2020
+
+
+def validate_eyr(field: str) -> bool:
+    pattern = "^[0-9]{4}$"
+    if not re.fullmatch(pattern, field):
+        return False
+    val = int(field)
+    return 2020 <= val <= 2030
+
+
+def validate_hgt(field: str) -> bool:
+    pattern = "^[0-9]+(cm|in)$"
+    if not re.fullmatch(pattern, field):
+        return False
+    val = int(field[:-2])
+    if "cm" in field:
+        return 150 <= val <= 193
+    return 59 <= val <= 76
+
+
+def validate_hcl(field: str) -> bool:
+    pattern = "^#[a-f0-9]{6}$"
+    if not re.fullmatch(pattern, field):
+        return False
+    return True
+
+
+def validate_ecl(field: str) -> bool:
+    return field in {
+        "amb",
+        "blu",
+        "brn",
+        "gry",
+        "grn",
+        "hzl",
+        "oth",
+    }
+
+
+def validate_pid(field: str) -> bool:
+    pattern = "^[0-9]{9}$"
+    if not re.fullmatch(pattern, field):
+        return False
+    return True
+
+
+def validate(passport: List[Field]) -> int:
+    fields = {
+        "byr": validate_byr,
+        "iyr": validate_iyr,
+        "eyr": validate_eyr,
+        "hgt": validate_hgt,
+        "hcl": validate_hcl,
+        "ecl": validate_ecl,
+        "pid": validate_pid,
+    }
+    tot = 0
+    for field in passport:
+        if len(field) != 2:
+            continue
+        if field[0] not in fields:
+            if field[0] == "cid":
+                continue
+            return False
+        if not fields[field[0]](field[1].strip()):
+            return False
+        tot += 1
+    return tot == len(fields)
+
+
+def solve(passport_fields: List[List[Field]]) -> int:
+    return sum(validate(passport) for passport in passport_fields)
+
+
+def main() -> None:
+    passports: List[List[Field]] = [[]]
+    for line in sys.stdin:
+        if line == "\n" or line == "":
+            passports.append([])
+            continue
+        passports[-1] += [tuple(s.split(":")) for s in line.split(" ") if s]
+    print(solve(passports))
+
+
+if __name__ == "__main__":
+    main()

2020/d05/ex1/ex1.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+
+import sys
+from typing import List
+
+
+def seat_id(boarding_pass: str) -> int:
+    min_x = 0
+    max_x = 128
+    min_y = 0
+    max_y = 8
+
+    for char in boarding_pass:
+        if char == "F":
+            max_x = (min_x + max_x) // 2
+        elif char == "B":
+            min_x = (min_x + max_x) // 2
+        elif char == "L":
+            max_y = (min_y + max_y) // 2
+        elif char == "R":
+            min_y = (min_y + max_y) // 2
+    return min_x * 8 + min_y
+
+
+def solve(passes: List[str]) -> int:
+    return max(seat_id(p) for p in passes)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

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2020/d05/ex2/ex2.py

@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+
+import sys
+from typing import List
+
+
+def seat_id(boarding_pass: str) -> int:
+    min_x = 0
+    max_x = 128
+    min_y = 0
+    max_y = 8
+
+    for char in boarding_pass:
+        if char == "F":
+            max_x = (min_x + max_x) // 2
+        elif char == "B":
+            min_x = (min_x + max_x) // 2
+        elif char == "L":
+            max_y = (min_y + max_y) // 2
+        elif char == "R":
+            min_y = (min_y + max_y) // 2
+    return min_x * 8 + min_y
+
+
+def solve(passes: List[str]) -> int:
+    ids = sorted(seat_id(p) for p in passes)
+
+    for prev, cur in zip(ids, ids[1:]):
+        if prev + 1 != cur:
+            return prev + 1
+
+    assert False  # Sanity check
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

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+FBFFBFFRRL
+FFFBBFFRLL
+BFFFBFFRRR
+FBFFBFFLLR
+FFFBBBFLLL
+FBFFFBFLRR
+BFFBFBBLLL
+BFFFBBBLRR
+FBBBBBBRRL
+FBFFBFFRLR
+FBBFFBBRLL
+FBBBFFFRRR
+BFFBFBBRRL
+FFBBFFBRRR
+BFBBBFFLRR
+FFFBFBBRRL
+BFBFBBBLRR
+FFFBBFBLRL
+FBFFBBFRLR
+BFFFBBFLRR
+BBFFFBBLRL
+FBBFFBFRLR
+FFFBFBFLLL
+FFFBFFFRRL
+BBFBFFFLLL
+FBFBFBFLRR
+BFBFFFFRLL

2020/d06/ex1/ex1.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+
+import sys
+from collections import defaultdict
+from typing import DefaultDict, List, Set
+
+
+def solve(raw: List[str]) -> int:
+    answers: DefaultDict[int, Set[str]] = defaultdict(set)
+    group = 0
+    for line in raw:
+        if line == "":
+            group += 1
+            continue
+        answers[group] |= {char for char in line}
+    return sum(len(answer) for answer in answers.values())
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d06/ex2/ex2.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+
+import sys
+from collections import defaultdict
+from typing import DefaultDict, List, Set
+
+
+def solve(raw: List[str]) -> int:
+    answers: DefaultDict[int, Set[str]] = defaultdict(set)
+    group = 0
+    first = True
+    for line in raw:
+        if line == "":
+            group += 1
+            first = True
+            continue
+        if not first:
+            answers[group] &= {char for char in line}
+        else:
+            answers[group] = {char for char in line}
+        first = False
+    return sum(len(answer) for answer in answers.values())
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d07/ex1/ex1.py

@@ -0,0 +1,77 @@
+#!/usr/bin/env python
+
+import re
+import sys
+from collections import defaultdict
+from copy import deepcopy
+from dataclasses import dataclass
+from typing import Dict, List, Set, Tuple
+
+
+@dataclass(eq=True, frozen=True)  # Hashable
+class ColorInfo:
+    num: int
+    color: str
+
+
+Graph = Dict[str, Set[ColorInfo]]
+
+
+def extract_info(line: str) -> Tuple[str, Set[ColorInfo]]:
+    color_pattern = re.compile("(.*) contain ")
+    match = color_pattern.search(line)
+    assert match is not None
+    color = match.group(1).replace("bags", "bag")
+
+    line = line[match.end() : -1]  # Remove period at end of line
+
+    if line == "no other bags":
+        return color, set()
+
+    colors: Set[ColorInfo] = set()
+    pattern = re.compile("([0-9]+) (.*)")
+    for col in line.split(", "):
+        match = pattern.search(col)
+        assert match is not None
+        colors |= {
+            ColorInfo(int(match.group(1)), match.group(2).replace("bags", "bag"))
+        }
+
+    return color, colors
+
+
+def to_graph(raw: List[str]) -> Graph:
+    return {color: inside for color, inside in map(extract_info, raw)}
+
+
+def reverse(graph: Graph) -> Graph:
+    reverse: Graph = defaultdict(set)
+
+    for color, contained in graph.items():
+        for col in contained:
+            reverse[col.color] |= {ColorInfo(-1, color)}
+
+    return reverse
+
+
+def containing(graph: Graph, col: str) -> Set[ColorInfo]:
+    res = deepcopy(graph[col])
+    for contains in graph[col]:
+        res |= containing(graph, contains.color)
+    return res
+
+
+def solve(raw: List[str]) -> int:
+    graph = to_graph(raw)
+    reverse_graph = reverse(graph)
+
+    return len(containing(reverse_graph, "shiny gold bag"))
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d07/ex1/input

@@ -0,0 +1,594 @@
+shiny aqua bags contain 1 dark white bag.
+muted blue bags contain 1 vibrant lavender bag, 4 dotted silver bags, 2 dim indigo bags.
+drab gray bags contain 5 mirrored white bags, 1 light green bag, 5 shiny lavender bags, 5 faded aqua bags.
+muted indigo bags contain 4 muted chartreuse bags, 2 dotted teal bags.
+drab white bags contain 2 dull fuchsia bags, 1 vibrant bronze bag.
+dim lavender bags contain 4 muted tan bags.
+dotted tomato bags contain 1 mirrored lime bag, 2 vibrant white bags.
+clear orange bags contain 5 clear violet bags, 2 dull beige bags, 2 dark chartreuse bags.
+bright lime bags contain no other bags.
+striped brown bags contain 3 bright orange bags.
+vibrant green bags contain 3 shiny fuchsia bags.
+plaid tomato bags contain 3 faded chartreuse bags, 2 wavy salmon bags, 1 faded white bag, 3 mirrored maroon bags.
+drab beige bags contain 2 shiny bronze bags, 4 pale violet bags, 3 bright tomato bags, 4 pale red bags.
+posh green bags contain 2 dull lavender bags, 4 clear plum bags, 2 dark gray bags.
+dull maroon bags contain 3 dull magenta bags, 1 dull tan bag, 1 faded cyan bag, 5 dull silver bags.
+faded crimson bags contain 2 muted purple bags, 4 dotted olive bags, 5 drab silver bags.
+wavy bronze bags contain 3 dark orange bags, 2 dark brown bags, 5 bright silver bags.
+dark turquoise bags contain 5 dull plum bags.
+dull lavender bags contain 4 dotted maroon bags, 3 muted brown bags, 4 drab black bags, 4 dull cyan bags.
+dotted plum bags contain 1 shiny bronze bag, 3 clear brown bags, 3 muted indigo bags.
+dull white bags contain 3 clear tan bags, 5 shiny gold bags, 2 drab crimson bags.
+dull teal bags contain 2 bright tomato bags.
+shiny crimson bags contain 3 light green bags, 5 striped brown bags, 3 faded fuchsia bags.
+wavy brown bags contain 1 drab crimson bag, 2 wavy indigo bags.
+dark tan bags contain 2 faded gray bags, 4 shiny salmon bags.
+shiny red bags contain 4 dull chartreuse bags, 5 pale tomato bags.
+bright orange bags contain no other bags.
+wavy yellow bags contain 5 light indigo bags, 5 dark gray bags, 5 plaid indigo bags, 4 faded red bags.
+faded bronze bags contain 4 faded cyan bags, 5 shiny beige bags, 5 muted red bags.
+dull bronze bags contain 1 mirrored beige bag, 5 muted violet bags, 1 wavy lime bag.
+dark lime bags contain 2 drab maroon bags, 5 bright indigo bags, 4 shiny black bags, 5 dotted turquoise bags.
+drab red bags contain 5 bright red bags, 2 vibrant brown bags.
+dotted salmon bags contain 3 vibrant turquoise bags, 2 dull beige bags, 3 light turquoise bags.
+dull gray bags contain 3 striped green bags, 3 wavy coral bags, 1 dark gray bag, 2 light indigo bags.
+faded black bags contain 4 muted fuchsia bags, 4 wavy coral bags, 1 drab tomato bag.
+muted magenta bags contain 2 posh chartreuse bags, 4 pale violet bags.
+light tan bags contain 2 posh turquoise bags, 3 vibrant white bags, 1 light black bag.
+dark blue bags contain 3 plaid indigo bags, 2 posh black bags.
+dull indigo bags contain 4 light gray bags, 3 dotted tan bags, 4 dull coral bags.
+dim fuchsia bags contain 3 vibrant yellow bags, 3 mirrored cyan bags, 4 mirrored brown bags.
+shiny beige bags contain 2 dull silver bags, 3 bright lime bags, 5 dull magenta bags.
+light cyan bags contain 3 vibrant violet bags, 2 mirrored tomato bags, 2 vibrant coral bags, 4 mirrored silver bags.
+clear turquoise bags contain 4 drab tomato bags, 3 shiny gold bags, 4 drab gold bags.
+pale teal bags contain 2 wavy maroon bags, 2 dotted olive bags, 4 shiny white bags, 2 drab turquoise bags.
+dark purple bags contain 1 wavy indigo bag, 3 bright black bags, 3 dotted teal bags.
+bright white bags contain 5 wavy red bags, 2 mirrored cyan bags, 3 drab green bags.
+mirrored aqua bags contain 1 faded violet bag, 5 dotted purple bags.
+shiny lime bags contain 4 dark aqua bags.
+pale bronze bags contain 1 clear crimson bag.
+vibrant white bags contain 5 plaid lavender bags, 1 drab red bag, 4 vibrant brown bags.
+plaid tan bags contain 5 dim crimson bags.
+posh olive bags contain 3 bright red bags.
+plaid brown bags contain 5 vibrant turquoise bags.
+mirrored tomato bags contain 2 dotted chartreuse bags, 3 light aqua bags, 3 posh beige bags.
+plaid blue bags contain 5 striped green bags, 1 plaid purple bag, 4 muted gold bags.
+shiny tan bags contain 5 striped coral bags, 1 dull brown bag.
+shiny gold bags contain 1 dull magenta bag, 5 dark white bags, 4 faded turquoise bags.
+dull salmon bags contain 2 plaid gold bags, 2 light indigo bags.
+striped tomato bags contain 2 striped tan bags, 4 light blue bags, 4 drab tan bags.
+drab tomato bags contain 3 dim teal bags, 4 striped yellow bags, 3 bright red bags.
+faded olive bags contain 1 drab plum bag, 1 pale aqua bag, 3 light blue bags.
+dotted indigo bags contain 2 clear tomato bags.
+dark white bags contain 5 light aqua bags, 2 dim teal bags, 2 muted fuchsia bags, 5 light purple bags.
+dull orange bags contain 4 pale gold bags, 5 posh brown bags, 2 mirrored brown bags, 3 dark bronze bags.
+bright maroon bags contain 1 mirrored yellow bag, 4 light teal bags.
+bright silver bags contain 1 vibrant coral bag, 3 dim teal bags, 5 light purple bags.
+muted olive bags contain 5 plaid orange bags, 1 muted magenta bag.
+dull silver bags contain no other bags.
+pale maroon bags contain 2 pale bronze bags.
+light gray bags contain 4 vibrant yellow bags, 2 pale red bags.
+drab teal bags contain 2 light crimson bags, 3 vibrant brown bags, 3 vibrant tan bags.
+bright gold bags contain 1 wavy red bag, 5 wavy coral bags.
+plaid chartreuse bags contain 2 dim coral bags, 4 drab silver bags, 5 dim chartreuse bags, 3 light purple bags.
+clear blue bags contain 2 pale tomato bags, 4 dull gold bags, 4 dim fuchsia bags, 4 pale coral bags.
+vibrant purple bags contain 5 faded orange bags.
+plaid aqua bags contain 3 muted cyan bags, 2 wavy gray bags, 4 drab green bags, 4 pale beige bags.
+muted lime bags contain 1 muted tan bag.
+faded coral bags contain 3 drab turquoise bags, 1 shiny plum bag, 5 mirrored green bags, 5 clear white bags.
+vibrant lime bags contain 5 posh coral bags.
+faded green bags contain 3 pale orange bags, 5 dull turquoise bags, 1 mirrored crimson bag.
+mirrored gray bags contain 5 dim indigo bags.
+wavy maroon bags contain 4 mirrored bronze bags, 1 striped olive bag, 2 dull salmon bags, 3 shiny crimson bags.
+dark violet bags contain 2 light purple bags.
+dark green bags contain 2 dim cyan bags.
+pale black bags contain 1 mirrored gold bag.
+bright yellow bags contain 2 vibrant crimson bags, 3 plaid lime bags, 2 dotted gold bags.
+muted teal bags contain 1 pale violet bag, 4 dull silver bags.
+dim beige bags contain 5 wavy red bags.
+muted purple bags contain 4 clear cyan bags.
+plaid fuchsia bags contain 3 dark coral bags.
+plaid bronze bags contain 5 plaid orange bags, 2 drab indigo bags.
+faded indigo bags contain 1 dark chartreuse bag, 4 dull green bags, 1 mirrored magenta bag.
+posh plum bags contain 3 dark chartreuse bags, 3 dotted turquoise bags, 4 dull maroon bags, 1 posh bronze bag.
+pale gold bags contain 4 striped brown bags.
+mirrored chartreuse bags contain 4 bright silver bags, 3 mirrored tomato bags, 4 wavy orange bags.
+pale orange bags contain 2 posh fuchsia bags, 2 clear salmon bags, 2 bright green bags.
+clear brown bags contain 4 light lime bags, 4 bright green bags, 5 pale yellow bags, 2 drab cyan bags.
+shiny plum bags contain 5 vibrant gray bags, 3 bright blue bags, 5 dark tomato bags.
+wavy white bags contain 4 plaid lime bags, 4 posh maroon bags, 5 drab lime bags, 1 vibrant crimson bag.
+faded red bags contain 1 dull coral bag, 5 clear cyan bags, 4 plaid chartreuse bags, 3 plaid orange bags.
+plaid red bags contain 5 pale blue bags, 4 light crimson bags, 3 faded fuchsia bags.
+bright cyan bags contain 3 dark white bags, 2 light crimson bags, 1 bright aqua bag.
+muted lavender bags contain 1 light green bag, 4 striped silver bags, 3 posh crimson bags.
+wavy crimson bags contain 1 light purple bag, 4 bright blue bags, 2 dull coral bags, 1 wavy beige bag.
+faded aqua bags contain 5 muted brown bags.
+mirrored fuchsia bags contain 1 faded beige bag, 3 muted gold bags.
+dark chartreuse bags contain 5 bright lime bags.
+plaid green bags contain 4 mirrored tan bags, 1 mirrored tomato bag, 5 pale indigo bags, 1 mirrored plum bag.
+shiny black bags contain 3 plaid chartreuse bags.
+dotted purple bags contain 2 dim teal bags.
+faded tan bags contain 2 bright fuchsia bags, 5 shiny fuchsia bags, 1 muted fuchsia bag, 1 mirrored brown bag.
+drab brown bags contain 1 striped orange bag, 4 dotted tomato bags.
+dull olive bags contain 1 striped black bag, 1 vibrant magenta bag.
+mirrored plum bags contain 1 clear gold bag, 5 pale green bags.
+dim tomato bags contain 4 drab gold bags, 2 shiny aqua bags.
+light lavender bags contain 1 muted violet bag.
+dim gray bags contain 3 light purple bags, 1 posh crimson bag, 1 faded brown bag.
+muted aqua bags contain 4 dull beige bags, 4 dull red bags.
+faded silver bags contain 1 mirrored cyan bag.
+shiny green bags contain 5 dull maroon bags.
+muted chartreuse bags contain 2 clear tan bags.
+plaid plum bags contain 1 dotted lime bag, 4 clear brown bags, 4 dull red bags.
+dotted silver bags contain 1 posh coral bag.
+dim crimson bags contain 4 faded violet bags, 1 striped silver bag.
+bright brown bags contain 1 bright coral bag, 3 posh brown bags, 4 drab tan bags.
+wavy cyan bags contain 3 clear gold bags, 1 mirrored salmon bag, 3 bright fuchsia bags, 2 light bronze bags.
+dull violet bags contain 5 striped white bags, 4 light blue bags, 4 dim black bags.
+vibrant olive bags contain 2 vibrant coral bags.
+bright coral bags contain 2 vibrant tan bags, 3 shiny indigo bags, 2 plaid indigo bags.
+dim turquoise bags contain 1 pale violet bag.
+striped crimson bags contain 2 faded gray bags.
+clear green bags contain 3 mirrored olive bags, 3 shiny tomato bags.
+faded violet bags contain 2 wavy coral bags, 2 dull tan bags, 1 dull silver bag, 1 bright orange bag.
+pale chartreuse bags contain 4 shiny crimson bags, 2 clear bronze bags.
+light plum bags contain 3 drab bronze bags, 1 bright bronze bag, 1 posh yellow bag.
+pale tomato bags contain 1 dim teal bag, 5 drab cyan bags, 3 muted coral bags, 2 dim chartreuse bags.
+plaid coral bags contain 1 striped tan bag, 3 vibrant cyan bags, 3 light beige bags, 2 dotted green bags.
+bright gray bags contain 4 mirrored teal bags, 4 striped brown bags, 1 dim green bag, 4 clear cyan bags.
+drab fuchsia bags contain 2 mirrored salmon bags, 4 posh orange bags, 3 faded crimson bags, 3 pale plum bags.
+light tomato bags contain 2 dotted gold bags, 1 dotted bronze bag.
+muted violet bags contain 2 light chartreuse bags.
+drab tan bags contain 2 light green bags, 5 bright red bags, 4 shiny beige bags.
+drab chartreuse bags contain 2 drab salmon bags, 2 dark brown bags, 4 clear turquoise bags.
+drab violet bags contain 4 faded red bags.
+posh cyan bags contain 4 bright violet bags.
+posh orange bags contain 4 pale plum bags, 5 posh aqua bags.
+plaid silver bags contain 1 dotted brown bag, 3 drab gold bags, 4 clear yellow bags.
+mirrored silver bags contain 3 shiny beige bags, 1 drab silver bag.
+faded gray bags contain no other bags.
+wavy tomato bags contain 1 bright brown bag, 3 striped red bags, 2 vibrant maroon bags.
+posh violet bags contain 2 dim aqua bags.
+bright blue bags contain 5 light lime bags, 2 faded violet bags, 3 light aqua bags, 4 vibrant coral bags.
+dark teal bags contain 5 muted fuchsia bags.
+striped fuchsia bags contain 1 wavy turquoise bag, 5 wavy green bags, 4 posh gold bags.
+posh maroon bags contain 2 dull red bags.
+shiny purple bags contain 2 clear tan bags.
+wavy lime bags contain 2 dark coral bags, 1 shiny gold bag.
+wavy silver bags contain 4 dotted white bags.
+shiny silver bags contain 2 plaid gold bags, 2 dim green bags, 5 plaid lime bags, 3 dull red bags.
+wavy red bags contain 3 vibrant brown bags, 4 bright indigo bags.
+dull chartreuse bags contain 4 dotted lime bags, 2 bright silver bags, 3 dull red bags, 4 wavy maroon bags.
+vibrant silver bags contain 1 bright fuchsia bag, 3 drab lavender bags, 2 drab olive bags, 3 dotted teal bags.
+striped gray bags contain 5 plaid orange bags, 1 wavy coral bag.
+striped green bags contain 4 wavy coral bags, 4 shiny gold bags, 3 dark brown bags, 5 vibrant brown bags.
+mirrored violet bags contain 3 dim silver bags, 1 posh tomato bag, 1 light salmon bag.
+dull purple bags contain 1 light gray bag, 3 wavy yellow bags, 1 wavy salmon bag.
+mirrored beige bags contain 4 dark cyan bags, 5 dull green bags.
+posh lime bags contain 3 posh chartreuse bags.
+vibrant tan bags contain 2 dull plum bags, 1 striped brown bag, 4 vibrant coral bags.
+dotted orange bags contain 1 mirrored olive bag, 5 drab silver bags.
+clear indigo bags contain 3 light lime bags, 4 dull coral bags.
+pale gray bags contain 1 faded black bag, 3 dim green bags, 4 wavy lavender bags, 2 posh brown bags.
+posh gold bags contain 5 dark tan bags, 2 dotted olive bags, 5 dark aqua bags.
+striped chartreuse bags contain 2 dull magenta bags, 1 posh tomato bag.
+mirrored bronze bags contain 2 faded fuchsia bags.
+clear salmon bags contain 4 posh bronze bags, 5 clear plum bags, 5 dull blue bags.
+posh purple bags contain 5 dim gray bags, 3 faded brown bags.
+faded lime bags contain 5 dim turquoise bags, 3 dark indigo bags, 2 vibrant gray bags, 1 muted silver bag.
+wavy beige bags contain 1 dark bronze bag, 4 dull plum bags, 4 mirrored silver bags.
+clear yellow bags contain 2 vibrant teal bags.
+vibrant plum bags contain 4 muted chartreuse bags, 4 posh silver bags.
+striped yellow bags contain 2 dull maroon bags, 5 bright red bags, 2 posh chartreuse bags.
+dark coral bags contain 3 dull tan bags.
+dull magenta bags contain no other bags.
+dark gold bags contain 1 dotted indigo bag, 4 shiny teal bags, 4 dotted silver bags.
+dim tan bags contain 1 striped lavender bag, 1 shiny tomato bag.
+muted maroon bags contain 2 dull salmon bags, 4 dim chartreuse bags, 3 bright aqua bags, 2 faded indigo bags.
+vibrant tomato bags contain 2 dark silver bags, 3 plaid purple bags.
+dotted lime bags contain 3 shiny crimson bags, 2 pale yellow bags.
+muted fuchsia bags contain 1 dull tan bag.
+bright tan bags contain 5 pale gold bags, 5 drab teal bags, 2 light blue bags.
+dark crimson bags contain 4 shiny orange bags, 3 faded purple bags, 3 bright white bags.
+striped tan bags contain 4 dotted turquoise bags, 4 drab lime bags, 5 dim teal bags.
+posh fuchsia bags contain 2 dotted olive bags, 2 mirrored beige bags, 3 shiny bronze bags.
+pale silver bags contain 4 vibrant lavender bags, 4 clear beige bags, 4 striped gold bags.
+posh aqua bags contain 4 drab lime bags, 4 dull tan bags, 5 vibrant tan bags.
+plaid salmon bags contain 5 dim coral bags, 2 wavy bronze bags.
+mirrored orange bags contain 4 vibrant gray bags.
+dim yellow bags contain 5 pale tan bags, 4 dark black bags.
+dotted coral bags contain 4 dotted chartreuse bags, 2 bright red bags, 1 vibrant white bag, 1 vibrant brown bag.
+muted crimson bags contain 4 striped orange bags, 5 pale yellow bags, 3 posh blue bags, 1 muted red bag.
+striped lavender bags contain 3 striped brown bags.
+striped maroon bags contain 2 shiny yellow bags.
+vibrant blue bags contain 3 faded cyan bags, 1 shiny lime bag, 3 dark tomato bags.
+pale lavender bags contain 4 plaid magenta bags, 4 striped blue bags.
+dull tan bags contain 4 shiny indigo bags, 2 light purple bags, 4 faded cyan bags.
+dotted beige bags contain 3 drab indigo bags.
+light indigo bags contain 1 faded cyan bag, 5 bright aqua bags, 1 shiny indigo bag.
+vibrant crimson bags contain 4 dotted fuchsia bags.
+wavy blue bags contain 4 wavy teal bags, 1 dull blue bag.
+vibrant chartreuse bags contain 4 striped orange bags.
+vibrant cyan bags contain 5 wavy coral bags.
+faded brown bags contain 5 faded turquoise bags.
+faded magenta bags contain 1 dull indigo bag, 4 plaid aqua bags, 4 dim crimson bags.
+mirrored coral bags contain 4 drab crimson bags, 2 light salmon bags, 2 clear indigo bags.
+faded cyan bags contain no other bags.
+dark brown bags contain 5 light purple bags.
+wavy violet bags contain 3 dull coral bags, 1 bright aqua bag, 3 shiny lavender bags.
+posh tomato bags contain 4 vibrant chartreuse bags, 4 mirrored teal bags.
+pale crimson bags contain 1 plaid orange bag, 1 dark violet bag, 3 plaid lavender bags.
+dark fuchsia bags contain 4 plaid beige bags, 2 plaid chartreuse bags.
+plaid magenta bags contain 3 clear lavender bags, 5 mirrored brown bags, 5 shiny bronze bags.
+striped blue bags contain 1 dull bronze bag, 1 dotted fuchsia bag, 1 light lavender bag, 1 clear turquoise bag.
+dotted olive bags contain 4 dotted turquoise bags, 5 dotted bronze bags, 3 pale yellow bags, 4 pale red bags.
+posh silver bags contain 3 pale violet bags, 1 plaid salmon bag, 1 posh coral bag.
+dotted chartreuse bags contain 3 bright blue bags.
+light coral bags contain 4 shiny fuchsia bags, 2 pale red bags, 1 muted silver bag, 2 bright cyan bags.
+pale brown bags contain 5 light aqua bags.
+dotted black bags contain 2 plaid purple bags, 1 mirrored aqua bag, 5 posh beige bags.
+posh coral bags contain 3 dark aqua bags, 2 pale yellow bags, 5 plaid blue bags, 4 dim aqua bags.
+shiny gray bags contain 1 bright gold bag, 1 muted bronze bag, 5 striped green bags, 5 shiny teal bags.
+drab orange bags contain 5 plaid salmon bags, 2 vibrant beige bags.
+plaid yellow bags contain 4 clear teal bags, 2 bright red bags.
+striped violet bags contain 4 mirrored fuchsia bags, 4 vibrant white bags, 3 dim teal bags.
+dim aqua bags contain 1 muted fuchsia bag, 1 dull tan bag.
+light orange bags contain 2 bright red bags, 4 dark white bags, 1 dim chartreuse bag, 5 faded fuchsia bags.
+faded salmon bags contain 5 wavy gray bags.
+shiny yellow bags contain 2 vibrant plum bags, 3 dim teal bags, 1 plaid tan bag, 5 posh plum bags.
+vibrant beige bags contain 2 wavy lavender bags, 4 posh chartreuse bags, 3 pale teal bags, 5 wavy lime bags.
+light fuchsia bags contain 3 clear brown bags, 3 bright lavender bags.
+pale magenta bags contain 4 posh silver bags.
+dark maroon bags contain 3 drab turquoise bags.
+faded beige bags contain 1 vibrant white bag, 4 drab red bags, 1 drab lavender bag.
+bright bronze bags contain 1 pale bronze bag, 3 muted silver bags, 2 striped coral bags, 3 clear gray bags.
+light silver bags contain 3 dotted lavender bags, 2 wavy lavender bags.
+muted salmon bags contain 2 drab tan bags, 5 wavy tomato bags.
+bright black bags contain 5 plaid tan bags.
+dim chartreuse bags contain 5 muted gold bags, 5 bright blue bags, 5 faded cyan bags.
+shiny white bags contain 4 bright tan bags.
+bright red bags contain 3 dull silver bags.
+dark aqua bags contain 2 dull red bags.
+drab plum bags contain 4 muted brown bags, 5 muted plum bags.
+muted yellow bags contain 5 light purple bags, 3 dotted silver bags, 3 faded turquoise bags.
+light violet bags contain 1 pale red bag, 4 dim silver bags, 2 mirrored bronze bags.
+pale lime bags contain 4 bright lavender bags.
+pale tan bags contain 4 striped green bags, 2 dotted chartreuse bags.
+dim green bags contain 1 light lime bag, 1 shiny beige bag.
+mirrored gold bags contain 4 mirrored white bags.
+dim silver bags contain 5 pale coral bags, 3 wavy coral bags.
+dull aqua bags contain 3 posh indigo bags, 5 dotted coral bags, 1 dark salmon bag, 3 striped crimson bags.
+posh yellow bags contain 1 dark bronze bag, 2 mirrored white bags, 2 light crimson bags.
+mirrored magenta bags contain 1 bright violet bag, 2 drab lavender bags, 3 pale violet bags, 2 plaid salmon bags.
+shiny chartreuse bags contain 2 dotted purple bags, 5 wavy red bags, 3 plaid beige bags.
+light black bags contain 1 dark chartreuse bag, 3 faded tomato bags.
+clear plum bags contain 5 vibrant brown bags, 3 dim coral bags, 4 mirrored brown bags, 1 faded black bag.
+pale violet bags contain 2 dull tan bags.
+bright fuchsia bags contain 4 dull orange bags.
+dotted teal bags contain 5 bright red bags, 3 wavy red bags, 1 dull coral bag, 3 clear plum bags.
+dotted blue bags contain 2 wavy beige bags, 3 muted purple bags.
+muted gray bags contain 3 faded aqua bags, 1 shiny olive bag, 5 clear salmon bags, 1 vibrant violet bag.
+dull beige bags contain 1 wavy lavender bag, 4 dark bronze bags, 5 dull tan bags.
+drab turquoise bags contain 3 posh gray bags, 5 drab red bags.
+vibrant yellow bags contain 2 shiny aqua bags, 4 light chartreuse bags.
+posh brown bags contain 3 bright green bags, 5 posh lavender bags.
+faded gold bags contain 4 vibrant maroon bags, 4 dotted purple bags.
+dotted turquoise bags contain 5 clear plum bags, 3 muted gold bags, 4 dark violet bags.
+dotted tan bags contain 5 dim aqua bags, 4 striped violet bags.
+posh crimson bags contain 4 striped blue bags, 5 dull magenta bags, 2 bright coral bags.
+muted white bags contain 5 dull olive bags.
+vibrant teal bags contain 5 dotted turquoise bags, 1 striped tan bag, 1 drab tan bag.
+dotted yellow bags contain 3 plaid turquoise bags, 2 posh yellow bags, 4 striped blue bags, 5 posh black bags.
+posh magenta bags contain 5 mirrored black bags.
+dotted green bags contain 4 dim crimson bags, 1 shiny lavender bag, 4 bright salmon bags, 1 plaid gray bag.
+bright green bags contain 3 bright aqua bags, 3 dull maroon bags, 4 dark brown bags.
+dark gray bags contain 5 muted purple bags, 2 striped blue bags, 4 faded lavender bags.
+bright crimson bags contain 2 striped olive bags, 3 muted blue bags.
+muted cyan bags contain 3 shiny tomato bags.
+light yellow bags contain 2 striped red bags, 4 shiny crimson bags.
+pale aqua bags contain 5 shiny yellow bags, 3 dark lavender bags, 3 posh white bags.
+clear red bags contain 1 dotted silver bag, 1 dull teal bag, 1 faded maroon bag, 1 dotted salmon bag.
+pale red bags contain 2 faded gray bags.
+dotted maroon bags contain 5 posh aqua bags, 3 dull silver bags.
+dull blue bags contain 4 light crimson bags, 3 light lime bags, 1 dark orange bag, 5 light indigo bags.
+posh turquoise bags contain 1 muted gold bag, 5 striped lavender bags, 3 dull salmon bags, 5 vibrant chartreuse bags.
+striped magenta bags contain 1 posh silver bag, 5 dark brown bags.
+pale blue bags contain 2 muted gold bags, 4 vibrant brown bags, 1 light lavender bag.
+vibrant violet bags contain 5 bright red bags.
+faded fuchsia bags contain 2 light lime bags, 4 bright lime bags, 3 pale violet bags.
+shiny coral bags contain 1 clear plum bag, 5 muted chartreuse bags, 1 muted violet bag, 5 striped yellow bags.
+pale olive bags contain 4 plaid lime bags, 1 posh salmon bag.
+wavy tan bags contain 3 faded gray bags.
+faded chartreuse bags contain 3 dim coral bags, 1 mirrored bronze bag, 3 posh bronze bags.
+mirrored brown bags contain 1 faded violet bag, 4 dull maroon bags, 5 dotted magenta bags.
+clear white bags contain 5 muted magenta bags, 4 dull magenta bags, 3 pale plum bags, 4 drab indigo bags.
+drab maroon bags contain 2 clear beige bags, 3 wavy beige bags, 5 faded purple bags.
+striped silver bags contain 3 drab tomato bags.
+faded plum bags contain 1 clear teal bag, 3 bright aqua bags.
+plaid violet bags contain 2 drab violet bags, 4 muted turquoise bags, 5 muted indigo bags.
+clear black bags contain 5 muted fuchsia bags, 1 muted coral bag, 2 light black bags.
+vibrant maroon bags contain 1 dark lavender bag, 1 pale crimson bag, 4 bright indigo bags, 5 mirrored maroon bags.
+drab indigo bags contain 2 dim coral bags, 1 drab green bag, 2 shiny lavender bags.
+drab olive bags contain 2 dark aqua bags, 4 striped brown bags.
+dull crimson bags contain 3 dull cyan bags.
+wavy teal bags contain 4 striped orange bags, 2 drab cyan bags.
+dark red bags contain 2 dull maroon bags, 4 muted plum bags, 4 dull plum bags.
+striped salmon bags contain 3 bright red bags, 1 light aqua bag, 4 wavy gold bags.
+mirrored tan bags contain 5 dotted olive bags, 2 dim tomato bags, 2 mirrored tomato bags, 4 clear teal bags.
+striped white bags contain 2 pale coral bags, 2 shiny green bags.
+shiny tomato bags contain 5 pale coral bags, 5 dull beige bags.
+vibrant indigo bags contain 2 dim black bags, 4 dim blue bags, 3 dim white bags.
+wavy lavender bags contain 4 faded bronze bags, 4 muted red bags, 3 light lime bags, 4 muted gold bags.
+shiny turquoise bags contain 2 dull red bags, 5 faded gray bags, 1 muted turquoise bag.
+shiny lavender bags contain 5 bright aqua bags.
+posh tan bags contain 1 shiny yellow bag, 3 drab magenta bags.
+light green bags contain 4 bright red bags, 1 vibrant coral bag.
+drab black bags contain 5 faded tomato bags, 3 dotted chartreuse bags.
+clear chartreuse bags contain 3 wavy bronze bags, 4 plaid purple bags, 3 dark orange bags.
+dull black bags contain 1 wavy teal bag, 3 light lavender bags, 2 striped indigo bags.
+wavy black bags contain 2 clear orange bags, 4 muted purple bags.
+pale plum bags contain 1 bright coral bag, 1 drab tan bag, 1 plaid fuchsia bag, 1 dotted fuchsia bag.
+dotted violet bags contain 3 bright black bags.
+posh red bags contain 3 bright black bags.
+plaid lime bags contain 5 posh beige bags, 1 dotted turquoise bag.
+wavy aqua bags contain 1 dark yellow bag, 3 drab indigo bags.
+dim magenta bags contain 3 dark violet bags.
+drab aqua bags contain 5 posh orange bags, 1 dark silver bag, 4 plaid purple bags, 2 wavy teal bags.
+dull brown bags contain 4 light lime bags.
+striped orange bags contain 5 light crimson bags, 3 muted tan bags, 5 dotted coral bags, 3 plaid blue bags.
+muted brown bags contain 1 posh blue bag, 4 dotted magenta bags, 3 dull coral bags.
+faded blue bags contain 5 striped black bags, 1 vibrant yellow bag.
+plaid indigo bags contain 3 dark brown bags, 5 light purple bags, 4 light aqua bags, 3 light green bags.
+plaid turquoise bags contain 5 dotted teal bags.
+light turquoise bags contain 2 dull salmon bags, 5 dotted tan bags.
+dim purple bags contain 4 muted white bags, 5 drab purple bags.
+pale coral bags contain 5 posh gray bags.
+clear lime bags contain 3 dim magenta bags, 3 plaid tomato bags, 1 drab magenta bag, 3 shiny purple bags.
+dim black bags contain 3 clear gold bags, 4 muted violet bags.
+light maroon bags contain 4 muted yellow bags, 1 pale cyan bag, 2 mirrored turquoise bags, 4 dull lavender bags.
+clear magenta bags contain 2 shiny magenta bags, 2 muted chartreuse bags.
+striped bronze bags contain 5 clear tan bags, 1 drab lavender bag, 2 pale crimson bags.
+dark salmon bags contain 1 vibrant plum bag, 5 drab tan bags, 4 drab coral bags, 4 dull tan bags.
+vibrant salmon bags contain 2 muted olive bags.
+dim gold bags contain 2 dim olive bags, 5 plaid olive bags, 2 posh orange bags.
+wavy chartreuse bags contain 4 shiny yellow bags, 4 vibrant blue bags.
+vibrant brown bags contain 3 striped brown bags, 4 muted red bags, 2 shiny indigo bags.
+plaid maroon bags contain 2 muted teal bags, 2 pale yellow bags, 2 bright beige bags, 5 striped yellow bags.
+dim indigo bags contain 4 dull tomato bags, 4 clear cyan bags, 2 shiny salmon bags, 1 bright aqua bag.
+muted red bags contain 3 dull tan bags, 4 dull magenta bags, 1 bright aqua bag.
+posh beige bags contain 5 shiny black bags, 3 dotted magenta bags, 3 drab blue bags, 2 muted coral bags.
+pale fuchsia bags contain 3 dark brown bags, 5 posh gold bags.
+dark bronze bags contain 1 dim green bag, 5 posh chartreuse bags.
+dim coral bags contain 3 dull coral bags, 3 striped brown bags.
+drab crimson bags contain 2 dark bronze bags, 4 shiny indigo bags, 3 dull tan bags.
+bright indigo bags contain 3 bright blue bags.
+pale yellow bags contain 5 dim aqua bags, 1 vibrant brown bag, 2 vibrant tan bags, 3 wavy lavender bags.
+drab salmon bags contain 1 dotted indigo bag, 3 muted chartreuse bags, 5 dark olive bags.
+muted orange bags contain 4 faded lime bags, 2 dull coral bags, 5 vibrant magenta bags, 4 dull magenta bags.
+striped gold bags contain 2 dull silver bags, 5 bright lavender bags, 5 dim teal bags, 5 dark coral bags.
+posh chartreuse bags contain 3 dim teal bags, 5 light aqua bags.
+shiny blue bags contain 3 dull tan bags, 5 muted magenta bags.
+muted silver bags contain 3 wavy blue bags, 2 dim teal bags, 5 muted bronze bags.
+shiny bronze bags contain 1 light green bag, 4 vibrant magenta bags.
+wavy coral bags contain no other bags.
+shiny orange bags contain 2 muted purple bags.
+posh teal bags contain 4 clear plum bags.
+striped turquoise bags contain 3 muted indigo bags.
+dim bronze bags contain 2 shiny silver bags, 1 light silver bag, 2 dim indigo bags, 4 dim tomato bags.
+plaid white bags contain 4 drab turquoise bags.
+wavy indigo bags contain 3 clear gold bags, 5 mirrored bronze bags.
+faded teal bags contain 4 mirrored white bags.
+shiny fuchsia bags contain 3 drab indigo bags.
+dim red bags contain 3 clear bronze bags.
+dotted brown bags contain 4 wavy maroon bags, 5 drab green bags, 3 dark purple bags.
+dark tomato bags contain 3 vibrant coral bags, 5 dull coral bags, 2 drab cyan bags, 1 posh blue bag.
+clear teal bags contain 3 dark white bags.
+dark silver bags contain 3 dark cyan bags, 4 plaid salmon bags.
+wavy fuchsia bags contain 4 bright brown bags, 4 bright aqua bags, 5 light orange bags.
+light bronze bags contain 4 clear plum bags.
+striped purple bags contain 1 dim indigo bag.
+clear tomato bags contain 4 mirrored tomato bags, 3 muted indigo bags, 1 striped tan bag.
+muted turquoise bags contain 5 faded beige bags, 4 clear crimson bags, 2 bright teal bags.
+dull cyan bags contain 5 mirrored aqua bags, 2 shiny aqua bags, 3 light black bags, 4 bright coral bags.
+plaid crimson bags contain 2 mirrored teal bags, 2 dull fuchsia bags.
+shiny maroon bags contain 1 posh gold bag.
+dim white bags contain 5 striped brown bags, 2 dull magenta bags, 5 plaid tan bags.
+muted green bags contain 2 dull magenta bags, 5 clear cyan bags.
+plaid teal bags contain 2 dark tan bags, 3 pale lime bags.
+dotted lavender bags contain 2 posh aqua bags, 3 dull cyan bags.
+light salmon bags contain 5 dark silver bags.
+faded white bags contain 2 wavy maroon bags, 3 dull cyan bags.
+dull tomato bags contain 2 dim aqua bags, 4 posh lavender bags, 1 faded red bag.
+dark olive bags contain 5 clear bronze bags, 2 drab plum bags.
+pale indigo bags contain 2 mirrored beige bags, 5 wavy turquoise bags, 4 striped green bags, 2 dotted lavender bags.
+plaid purple bags contain 1 light lime bag.
+clear purple bags contain 3 vibrant white bags.
+dark yellow bags contain 2 pale olive bags, 4 pale cyan bags, 5 bright teal bags.
+muted beige bags contain 2 posh lime bags, 5 shiny gray bags, 2 dull blue bags.
+vibrant orange bags contain 5 posh crimson bags, 4 light chartreuse bags.
+light magenta bags contain 2 plaid maroon bags, 1 posh beige bag, 5 pale salmon bags.
+dotted crimson bags contain 5 dark chartreuse bags.
+striped coral bags contain 2 dim aqua bags.
+striped aqua bags contain 3 posh salmon bags, 3 dull red bags.
+mirrored salmon bags contain 5 bright red bags, 2 light green bags, 3 clear black bags, 5 posh brown bags.
+posh white bags contain 4 drab violet bags, 2 dotted silver bags.
+posh blue bags contain 4 dull maroon bags, 3 vibrant coral bags.
+dim orange bags contain 2 dull olive bags.
+shiny teal bags contain 1 faded tomato bag, 4 muted violet bags.
+mirrored maroon bags contain 3 dull blue bags.
+dark lavender bags contain 1 drab red bag, 3 shiny indigo bags, 4 faded beige bags, 1 drab turquoise bag.
+shiny olive bags contain 3 dark violet bags, 1 striped gold bag, 2 mirrored lime bags.
+bright violet bags contain 2 wavy bronze bags, 3 drab olive bags, 5 mirrored olive bags, 2 wavy lavender bags.
+clear olive bags contain 5 faded turquoise bags.
+mirrored lavender bags contain 1 light white bag, 4 light purple bags, 3 wavy lavender bags, 2 shiny lime bags.
+pale turquoise bags contain 4 dark tan bags.
+shiny salmon bags contain 1 shiny gold bag, 5 drab turquoise bags.
+vibrant gray bags contain 3 posh brown bags.
+dark indigo bags contain 1 mirrored black bag, 5 dull beige bags, 4 shiny beige bags, 3 drab lavender bags.
+light teal bags contain 5 dark olive bags, 5 vibrant chartreuse bags, 3 plaid salmon bags, 5 light yellow bags.
+clear violet bags contain 3 light crimson bags.
+clear tan bags contain 3 striped orange bags, 4 wavy lavender bags, 3 striped silver bags.
+clear bronze bags contain 2 plaid beige bags.
+clear gray bags contain 4 dotted cyan bags, 4 vibrant plum bags.
+drab cyan bags contain 1 light aqua bag, 1 drab teal bag, 3 bright orange bags, 3 dark white bags.
+plaid beige bags contain 3 dull green bags.
+wavy gold bags contain 4 shiny olive bags, 3 bright tan bags.
+clear aqua bags contain 3 posh chartreuse bags, 4 drab silver bags, 5 clear gray bags.
+bright chartreuse bags contain 2 light violet bags, 3 vibrant gray bags.
+plaid black bags contain 2 posh gray bags.
+light beige bags contain 4 dotted olive bags, 5 dull olive bags, 1 faded orange bag.
+mirrored teal bags contain 4 mirrored aqua bags.
+bright magenta bags contain 1 mirrored magenta bag, 3 bright blue bags, 1 vibrant blue bag, 2 drab gold bags.
+dim maroon bags contain 4 light bronze bags, 5 clear violet bags.
+light lime bags contain 4 plaid indigo bags.
+posh lavender bags contain 4 dark brown bags.
+clear beige bags contain 4 posh silver bags, 3 dull coral bags, 2 posh gray bags.
+drab bronze bags contain 4 plaid maroon bags.
+mirrored purple bags contain 3 dim magenta bags.
+dark magenta bags contain 4 faded maroon bags, 1 drab crimson bag, 5 dotted brown bags, 2 bright teal bags.
+dim brown bags contain 3 muted olive bags, 5 drab green bags, 1 mirrored olive bag.
+dark plum bags contain 2 vibrant tan bags.
+bright turquoise bags contain 1 mirrored aqua bag, 3 clear plum bags.
+muted black bags contain 5 faded cyan bags, 5 pale tan bags, 2 dotted chartreuse bags.
+dotted gray bags contain 3 posh plum bags.
+vibrant black bags contain 2 vibrant magenta bags, 5 faded cyan bags.
+mirrored cyan bags contain 2 clear cyan bags, 4 light aqua bags, 5 drab blue bags, 1 drab gold bag.
+wavy purple bags contain 5 striped magenta bags, 3 clear maroon bags, 1 mirrored green bag, 1 pale black bag.
+drab blue bags contain 3 mirrored lime bags, 1 mirrored blue bag.
+clear maroon bags contain 5 bright orange bags.
+shiny cyan bags contain 2 clear gray bags, 5 pale crimson bags.
+pale cyan bags contain 2 wavy turquoise bags, 5 wavy salmon bags.
+plaid gold bags contain 1 clear lavender bag, 1 bright beige bag.
+mirrored lime bags contain 2 dull tan bags, 3 shiny beige bags.
+drab green bags contain 1 vibrant yellow bag.
+dull red bags contain 5 plaid blue bags, 5 clear brown bags, 3 pale salmon bags, 2 dark orange bags.
+bright beige bags contain 4 dull silver bags, 5 vibrant brown bags, 4 drab red bags, 2 pale violet bags.
+clear silver bags contain 4 drab indigo bags, 2 clear salmon bags.
+posh bronze bags contain 5 bright indigo bags, 5 dotted purple bags, 1 dark violet bag, 2 dark orange bags.
+posh salmon bags contain 5 bright red bags, 3 striped green bags, 3 dark brown bags.
+clear cyan bags contain 5 dark chartreuse bags, 1 bright indigo bag, 4 pale yellow bags, 2 vibrant coral bags.
+mirrored blue bags contain 2 vibrant white bags.
+mirrored yellow bags contain 5 dotted gray bags, 4 dull maroon bags, 2 striped violet bags, 5 clear tomato bags.
+striped teal bags contain 2 clear black bags, 3 pale coral bags.
+faded orange bags contain 2 dark bronze bags.
+mirrored indigo bags contain 3 light tomato bags, 2 shiny crimson bags.
+pale green bags contain 4 light chartreuse bags.
+plaid cyan bags contain 4 plaid fuchsia bags, 2 shiny teal bags, 3 dotted fuchsia bags, 3 dim red bags.
+muted gold bags contain 2 dull tan bags, 1 faded bronze bag, 4 dull maroon bags.
+wavy green bags contain 5 pale coral bags, 1 dull blue bag, 4 drab blue bags, 1 striped tan bag.
+light chartreuse bags contain 4 striped brown bags, 5 plaid purple bags, 4 drab cyan bags, 3 dull plum bags.
+dotted cyan bags contain 4 shiny black bags.
+light purple bags contain no other bags.
+dotted aqua bags contain 4 light gray bags, 2 light purple bags, 5 mirrored lime bags.
+drab gold bags contain 2 bright green bags, 5 bright indigo bags.
+posh gray bags contain 5 bright orange bags, 5 bright blue bags.
+striped red bags contain 4 drab green bags, 1 clear cyan bag.
+dotted bronze bags contain 5 light orange bags.
+muted plum bags contain 2 bright black bags, 3 dotted tomato bags, 2 vibrant brown bags.
+mirrored black bags contain 3 plaid chartreuse bags, 2 shiny indigo bags, 2 shiny beige bags.
+drab lavender bags contain 5 drab cyan bags, 1 muted purple bag, 1 wavy red bag, 3 drab crimson bags.
+vibrant turquoise bags contain 3 shiny beige bags, 3 striped brown bags, 5 dim teal bags.
+muted tan bags contain 1 plaid purple bag, 3 shiny beige bags, 1 drab gold bag.
+pale beige bags contain 5 bright silver bags.
+wavy olive bags contain 4 dotted turquoise bags, 4 dull silver bags, 1 bright gold bag.
+dim olive bags contain 5 light lavender bags, 4 shiny tomato bags, 4 clear cyan bags.
+wavy salmon bags contain 4 bright aqua bags.
+dotted gold bags contain 3 shiny red bags, 3 dull fuchsia bags.
+shiny violet bags contain 3 dotted tomato bags, 1 drab coral bag.
+striped plum bags contain 4 drab beige bags, 3 clear tan bags, 5 light aqua bags, 1 shiny fuchsia bag.
+clear lavender bags contain 2 bright aqua bags, 3 dull silver bags, 3 bright green bags, 2 bright orange bags.
+faded maroon bags contain 5 dark indigo bags, 1 posh fuchsia bag.
+vibrant red bags contain 4 striped fuchsia bags, 3 drab orange bags, 1 clear brown bag, 1 plaid turquoise bag.
+dull coral bags contain 2 dim teal bags, 3 faded bronze bags.
+pale salmon bags contain 3 dull magenta bags, 1 light crimson bag.
+dotted magenta bags contain 4 dull maroon bags, 2 bright lime bags, 4 plaid indigo bags, 4 faded cyan bags.
+wavy gray bags contain 4 muted gray bags, 3 shiny magenta bags, 1 posh teal bag.
+light red bags contain 4 shiny chartreuse bags.
+dim blue bags contain 4 vibrant orange bags.
+muted bronze bags contain 5 mirrored aqua bags, 4 dim green bags.
+drab lime bags contain 1 drab cyan bag, 3 pale crimson bags, 4 bright green bags, 3 drab lavender bags.
+light white bags contain 5 bright green bags.
+bright teal bags contain 4 shiny brown bags, 4 dark silver bags.
+striped beige bags contain 2 shiny magenta bags.
+wavy magenta bags contain 5 pale bronze bags, 5 pale plum bags, 3 muted silver bags.
+dark orange bags contain 1 drab tomato bag, 3 striped brown bags, 1 dim teal bag, 5 bright beige bags.
+striped indigo bags contain 1 vibrant gold bag, 1 shiny green bag.
+clear coral bags contain 2 shiny gray bags.
+faded yellow bags contain 4 faded gold bags, 2 bright turquoise bags, 5 dark silver bags, 3 wavy coral bags.
+dim plum bags contain 1 clear purple bag, 4 light brown bags.
+mirrored turquoise bags contain 5 wavy indigo bags, 3 dark fuchsia bags, 5 plaid white bags, 2 dim turquoise bags.
+posh black bags contain 2 striped black bags, 5 dim teal bags, 3 bright silver bags, 5 posh beige bags.
+dotted fuchsia bags contain 1 faded turquoise bag, 2 shiny lavender bags, 4 posh salmon bags, 1 clear olive bag.
+faded lavender bags contain 2 striped yellow bags, 1 posh lavender bag.
+dim lime bags contain 2 wavy gray bags, 5 clear gray bags.
+vibrant bronze bags contain 3 drab tomato bags, 5 bright tan bags.
+dull plum bags contain 5 bright red bags, 4 dull magenta bags.
+dim teal bags contain 4 light purple bags, 4 plaid lavender bags, 1 dull magenta bag.
+dull yellow bags contain 4 vibrant orange bags, 1 dark tomato bag, 5 pale tan bags.
+dull green bags contain 2 bright blue bags, 5 dull red bags.
+light crimson bags contain 5 dull maroon bags, 4 muted gold bags.
+dark black bags contain 1 dim silver bag, 3 plaid magenta bags.
+bright lavender bags contain 4 muted fuchsia bags.
+drab coral bags contain 4 shiny chartreuse bags, 3 posh yellow bags, 3 wavy indigo bags.
+mirrored crimson bags contain 3 posh maroon bags, 5 striped olive bags, 3 mirrored magenta bags.
+muted coral bags contain 3 wavy violet bags, 1 dotted chartreuse bag, 1 shiny beige bag.
+vibrant gold bags contain 2 dull orange bags, 1 clear chartreuse bag.
+wavy orange bags contain 5 dark bronze bags.
+mirrored white bags contain 5 clear gold bags, 3 drab tomato bags, 4 dotted bronze bags, 3 striped orange bags.
+clear gold bags contain 3 drab indigo bags, 4 wavy violet bags, 2 shiny salmon bags, 4 light brown bags.
+shiny magenta bags contain 5 drab silver bags, 2 muted gold bags.
+dim violet bags contain 1 posh lime bag, 4 shiny orange bags, 2 posh chartreuse bags.
+striped olive bags contain 4 plaid indigo bags, 5 dim chartreuse bags, 4 clear lavender bags.
+plaid gray bags contain 3 shiny gold bags, 2 dull coral bags.
+clear crimson bags contain 4 shiny aqua bags, 3 light crimson bags, 5 dim chartreuse bags.
+drab silver bags contain 1 dim teal bag, 3 faded cyan bags, 1 shiny indigo bag.
+mirrored green bags contain 5 dotted lime bags, 4 pale cyan bags.
+bright aqua bags contain no other bags.
+bright plum bags contain 4 dim aqua bags, 2 dull crimson bags, 1 wavy maroon bag.
+vibrant lavender bags contain 1 plaid tan bag, 3 vibrant brown bags, 3 drab gold bags, 4 faded red bags.
+pale white bags contain 3 bright brown bags, 4 mirrored beige bags.
+plaid lavender bags contain 1 dull magenta bag, 2 dull silver bags, 1 shiny indigo bag.
+bright salmon bags contain 1 striped coral bag, 4 plaid lavender bags, 1 muted red bag, 1 drab red bag.
+plaid olive bags contain 5 faded turquoise bags, 4 dim green bags, 2 striped beige bags.
+wavy plum bags contain 1 clear lavender bag, 2 faded brown bags.
+clear fuchsia bags contain 1 muted bronze bag.
+wavy turquoise bags contain 5 shiny lime bags, 1 drab olive bag, 4 dim white bags, 1 dotted gray bag.
+vibrant aqua bags contain 2 faded lavender bags.
+dotted white bags contain 3 muted crimson bags, 5 mirrored white bags, 1 mirrored fuchsia bag.
+bright purple bags contain 2 dotted chartreuse bags, 4 posh cyan bags, 3 bright plum bags.
+light aqua bags contain 1 plaid lavender bag, 3 wavy coral bags, 5 shiny indigo bags.
+drab yellow bags contain 4 shiny teal bags, 2 dotted green bags, 5 vibrant silver bags, 3 dotted turquoise bags.
+mirrored olive bags contain 1 dull plum bag.
+light olive bags contain 1 shiny coral bag, 4 drab white bags, 3 dim turquoise bags, 4 dull gold bags.
+shiny indigo bags contain no other bags.
+dull gold bags contain 3 dark indigo bags.
+bright tomato bags contain 5 muted blue bags.
+faded purple bags contain 4 bright orange bags, 2 faded violet bags.
+drab magenta bags contain 3 wavy lavender bags, 2 drab cyan bags, 2 clear beige bags, 4 bright indigo bags.
+striped lime bags contain 4 light tan bags.
+light gold bags contain 2 pale plum bags.
+striped black bags contain 1 plaid salmon bag, 2 plaid beige bags, 4 dotted teal bags, 2 posh chartreuse bags.
+faded tomato bags contain 2 striped yellow bags, 4 muted red bags.
+dull fuchsia bags contain 5 dotted olive bags, 2 muted purple bags.
+pale purple bags contain 4 posh silver bags, 4 wavy yellow bags.
+bright olive bags contain 5 shiny fuchsia bags, 5 dull crimson bags, 5 drab red bags, 5 posh turquoise bags.
+vibrant fuchsia bags contain 1 vibrant beige bag, 5 shiny magenta bags.
+faded turquoise bags contain 5 light lime bags, 4 dark white bags.
+plaid orange bags contain 5 vibrant coral bags, 4 light crimson bags, 4 plaid chartreuse bags, 1 dull green bag.
+posh indigo bags contain 3 wavy green bags, 2 shiny orange bags, 5 faded violet bags, 2 dotted coral bags.
+mirrored red bags contain 4 mirrored olive bags, 1 dark silver bag, 1 dull red bag.
+dim salmon bags contain 1 striped salmon bag, 5 faded gray bags.
+dim cyan bags contain 3 wavy olive bags, 5 drab purple bags, 3 mirrored bronze bags.
+light blue bags contain 2 striped bronze bags, 4 dull white bags, 1 posh bronze bag.
+dull turquoise bags contain 4 striped red bags, 1 light lavender bag, 5 plaid bronze bags, 1 mirrored brown bag.
+vibrant coral bags contain 1 bright orange bag.
+striped cyan bags contain 2 dark white bags, 4 drab red bags, 2 plaid salmon bags.
+muted tomato bags contain 4 drab red bags, 3 vibrant silver bags, 4 clear fuchsia bags, 3 wavy white bags.
+dotted red bags contain 1 light blue bag.
+dark beige bags contain 2 posh lime bags, 3 striped black bags.
+dark cyan bags contain 1 dim chartreuse bag, 2 shiny beige bags, 4 dotted magenta bags, 4 light chartreuse bags.
+dull lime bags contain 3 muted chartreuse bags.
+light brown bags contain 3 mirrored brown bags.
+vibrant magenta bags contain 1 dim green bag.
+shiny brown bags contain 5 bright brown bags, 3 faded cyan bags, 5 clear tan bags, 2 plaid maroon bags.
+drab purple bags contain 1 shiny indigo bag, 4 striped yellow bags.

2020/d07/ex2/ex2.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+
+import re
+import sys
+from collections import defaultdict
+from copy import deepcopy
+from dataclasses import dataclass
+from typing import Dict, List, Set, Tuple
+
+
+@dataclass(eq=True, frozen=True)  # Hashable
+class ColorInfo:
+    num: int
+    color: str
+
+
+Graph = Dict[str, Set[ColorInfo]]
+
+
+def extract_info(line: str) -> Tuple[str, Set[ColorInfo]]:
+    color_pattern = re.compile("(.*) contain ")
+    match = color_pattern.search(line)
+    assert match is not None
+    color = match.group(1).replace("bags", "bag")
+
+    line = line[match.end() : -1]  # Remove period at end of line
+
+    if line == "no other bags":
+        return color, set()
+
+    colors: Set[ColorInfo] = set()
+    pattern = re.compile("([0-9]+) (.*)")
+    for col in line.split(", "):
+        match = pattern.search(col)
+        assert match is not None
+        colors |= {
+            ColorInfo(int(match.group(1)), match.group(2).replace("bags", "bag"))
+        }
+
+    return color, colors
+
+
+def to_graph(raw: List[str]) -> Graph:
+    return {color: inside for color, inside in map(extract_info, raw)}
+
+
+def num_bags(graph: Graph, col: str) -> int:
+    return sum(
+        contained.num * (1 + num_bags(graph, contained.color))
+        for contained in graph[col]
+    )
+
+
+def solve(raw: List[str]) -> int:
+    graph = to_graph(raw)
+
+    return num_bags(graph, "shiny gold bag")
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d07/ex2/input

@@ -0,0 +1,594 @@
+shiny aqua bags contain 1 dark white bag.
+muted blue bags contain 1 vibrant lavender bag, 4 dotted silver bags, 2 dim indigo bags.
+drab gray bags contain 5 mirrored white bags, 1 light green bag, 5 shiny lavender bags, 5 faded aqua bags.
+muted indigo bags contain 4 muted chartreuse bags, 2 dotted teal bags.
+drab white bags contain 2 dull fuchsia bags, 1 vibrant bronze bag.
+dim lavender bags contain 4 muted tan bags.
+dotted tomato bags contain 1 mirrored lime bag, 2 vibrant white bags.
+clear orange bags contain 5 clear violet bags, 2 dull beige bags, 2 dark chartreuse bags.
+bright lime bags contain no other bags.
+striped brown bags contain 3 bright orange bags.
+vibrant green bags contain 3 shiny fuchsia bags.
+plaid tomato bags contain 3 faded chartreuse bags, 2 wavy salmon bags, 1 faded white bag, 3 mirrored maroon bags.
+drab beige bags contain 2 shiny bronze bags, 4 pale violet bags, 3 bright tomato bags, 4 pale red bags.
+posh green bags contain 2 dull lavender bags, 4 clear plum bags, 2 dark gray bags.
+dull maroon bags contain 3 dull magenta bags, 1 dull tan bag, 1 faded cyan bag, 5 dull silver bags.
+faded crimson bags contain 2 muted purple bags, 4 dotted olive bags, 5 drab silver bags.
+wavy bronze bags contain 3 dark orange bags, 2 dark brown bags, 5 bright silver bags.
+dark turquoise bags contain 5 dull plum bags.
+dull lavender bags contain 4 dotted maroon bags, 3 muted brown bags, 4 drab black bags, 4 dull cyan bags.
+dotted plum bags contain 1 shiny bronze bag, 3 clear brown bags, 3 muted indigo bags.
+dull white bags contain 3 clear tan bags, 5 shiny gold bags, 2 drab crimson bags.
+dull teal bags contain 2 bright tomato bags.
+shiny crimson bags contain 3 light green bags, 5 striped brown bags, 3 faded fuchsia bags.
+wavy brown bags contain 1 drab crimson bag, 2 wavy indigo bags.
+dark tan bags contain 2 faded gray bags, 4 shiny salmon bags.
+shiny red bags contain 4 dull chartreuse bags, 5 pale tomato bags.
+bright orange bags contain no other bags.
+wavy yellow bags contain 5 light indigo bags, 5 dark gray bags, 5 plaid indigo bags, 4 faded red bags.
+faded bronze bags contain 4 faded cyan bags, 5 shiny beige bags, 5 muted red bags.
+dull bronze bags contain 1 mirrored beige bag, 5 muted violet bags, 1 wavy lime bag.
+dark lime bags contain 2 drab maroon bags, 5 bright indigo bags, 4 shiny black bags, 5 dotted turquoise bags.
+drab red bags contain 5 bright red bags, 2 vibrant brown bags.
+dotted salmon bags contain 3 vibrant turquoise bags, 2 dull beige bags, 3 light turquoise bags.
+dull gray bags contain 3 striped green bags, 3 wavy coral bags, 1 dark gray bag, 2 light indigo bags.
+faded black bags contain 4 muted fuchsia bags, 4 wavy coral bags, 1 drab tomato bag.
+muted magenta bags contain 2 posh chartreuse bags, 4 pale violet bags.
+light tan bags contain 2 posh turquoise bags, 3 vibrant white bags, 1 light black bag.
+dark blue bags contain 3 plaid indigo bags, 2 posh black bags.
+dull indigo bags contain 4 light gray bags, 3 dotted tan bags, 4 dull coral bags.
+dim fuchsia bags contain 3 vibrant yellow bags, 3 mirrored cyan bags, 4 mirrored brown bags.
+shiny beige bags contain 2 dull silver bags, 3 bright lime bags, 5 dull magenta bags.
+light cyan bags contain 3 vibrant violet bags, 2 mirrored tomato bags, 2 vibrant coral bags, 4 mirrored silver bags.
+clear turquoise bags contain 4 drab tomato bags, 3 shiny gold bags, 4 drab gold bags.
+pale teal bags contain 2 wavy maroon bags, 2 dotted olive bags, 4 shiny white bags, 2 drab turquoise bags.
+dark purple bags contain 1 wavy indigo bag, 3 bright black bags, 3 dotted teal bags.
+bright white bags contain 5 wavy red bags, 2 mirrored cyan bags, 3 drab green bags.
+mirrored aqua bags contain 1 faded violet bag, 5 dotted purple bags.
+shiny lime bags contain 4 dark aqua bags.
+pale bronze bags contain 1 clear crimson bag.
+vibrant white bags contain 5 plaid lavender bags, 1 drab red bag, 4 vibrant brown bags.
+plaid tan bags contain 5 dim crimson bags.
+posh olive bags contain 3 bright red bags.
+plaid brown bags contain 5 vibrant turquoise bags.
+mirrored tomato bags contain 2 dotted chartreuse bags, 3 light aqua bags, 3 posh beige bags.
+plaid blue bags contain 5 striped green bags, 1 plaid purple bag, 4 muted gold bags.
+shiny tan bags contain 5 striped coral bags, 1 dull brown bag.
+shiny gold bags contain 1 dull magenta bag, 5 dark white bags, 4 faded turquoise bags.
+dull salmon bags contain 2 plaid gold bags, 2 light indigo bags.
+striped tomato bags contain 2 striped tan bags, 4 light blue bags, 4 drab tan bags.
+drab tomato bags contain 3 dim teal bags, 4 striped yellow bags, 3 bright red bags.
+faded olive bags contain 1 drab plum bag, 1 pale aqua bag, 3 light blue bags.
+dotted indigo bags contain 2 clear tomato bags.
+dark white bags contain 5 light aqua bags, 2 dim teal bags, 2 muted fuchsia bags, 5 light purple bags.
+dull orange bags contain 4 pale gold bags, 5 posh brown bags, 2 mirrored brown bags, 3 dark bronze bags.
+bright maroon bags contain 1 mirrored yellow bag, 4 light teal bags.
+bright silver bags contain 1 vibrant coral bag, 3 dim teal bags, 5 light purple bags.
+muted olive bags contain 5 plaid orange bags, 1 muted magenta bag.
+dull silver bags contain no other bags.
+pale maroon bags contain 2 pale bronze bags.
+light gray bags contain 4 vibrant yellow bags, 2 pale red bags.
+drab teal bags contain 2 light crimson bags, 3 vibrant brown bags, 3 vibrant tan bags.
+bright gold bags contain 1 wavy red bag, 5 wavy coral bags.
+plaid chartreuse bags contain 2 dim coral bags, 4 drab silver bags, 5 dim chartreuse bags, 3 light purple bags.
+clear blue bags contain 2 pale tomato bags, 4 dull gold bags, 4 dim fuchsia bags, 4 pale coral bags.
+vibrant purple bags contain 5 faded orange bags.
+plaid aqua bags contain 3 muted cyan bags, 2 wavy gray bags, 4 drab green bags, 4 pale beige bags.
+muted lime bags contain 1 muted tan bag.
+faded coral bags contain 3 drab turquoise bags, 1 shiny plum bag, 5 mirrored green bags, 5 clear white bags.
+vibrant lime bags contain 5 posh coral bags.
+faded green bags contain 3 pale orange bags, 5 dull turquoise bags, 1 mirrored crimson bag.
+mirrored gray bags contain 5 dim indigo bags.
+wavy maroon bags contain 4 mirrored bronze bags, 1 striped olive bag, 2 dull salmon bags, 3 shiny crimson bags.
+dark violet bags contain 2 light purple bags.
+dark green bags contain 2 dim cyan bags.
+pale black bags contain 1 mirrored gold bag.
+bright yellow bags contain 2 vibrant crimson bags, 3 plaid lime bags, 2 dotted gold bags.
+muted teal bags contain 1 pale violet bag, 4 dull silver bags.
+dim beige bags contain 5 wavy red bags.
+muted purple bags contain 4 clear cyan bags.
+plaid fuchsia bags contain 3 dark coral bags.
+plaid bronze bags contain 5 plaid orange bags, 2 drab indigo bags.
+faded indigo bags contain 1 dark chartreuse bag, 4 dull green bags, 1 mirrored magenta bag.
+posh plum bags contain 3 dark chartreuse bags, 3 dotted turquoise bags, 4 dull maroon bags, 1 posh bronze bag.
+pale gold bags contain 4 striped brown bags.
+mirrored chartreuse bags contain 4 bright silver bags, 3 mirrored tomato bags, 4 wavy orange bags.
+pale orange bags contain 2 posh fuchsia bags, 2 clear salmon bags, 2 bright green bags.
+clear brown bags contain 4 light lime bags, 4 bright green bags, 5 pale yellow bags, 2 drab cyan bags.
+shiny plum bags contain 5 vibrant gray bags, 3 bright blue bags, 5 dark tomato bags.
+wavy white bags contain 4 plaid lime bags, 4 posh maroon bags, 5 drab lime bags, 1 vibrant crimson bag.
+faded red bags contain 1 dull coral bag, 5 clear cyan bags, 4 plaid chartreuse bags, 3 plaid orange bags.
+plaid red bags contain 5 pale blue bags, 4 light crimson bags, 3 faded fuchsia bags.
+bright cyan bags contain 3 dark white bags, 2 light crimson bags, 1 bright aqua bag.
+muted lavender bags contain 1 light green bag, 4 striped silver bags, 3 posh crimson bags.
+wavy crimson bags contain 1 light purple bag, 4 bright blue bags, 2 dull coral bags, 1 wavy beige bag.
+faded aqua bags contain 5 muted brown bags.
+mirrored fuchsia bags contain 1 faded beige bag, 3 muted gold bags.
+dark chartreuse bags contain 5 bright lime bags.
+plaid green bags contain 4 mirrored tan bags, 1 mirrored tomato bag, 5 pale indigo bags, 1 mirrored plum bag.
+shiny black bags contain 3 plaid chartreuse bags.
+dotted purple bags contain 2 dim teal bags.
+faded tan bags contain 2 bright fuchsia bags, 5 shiny fuchsia bags, 1 muted fuchsia bag, 1 mirrored brown bag.
+drab brown bags contain 1 striped orange bag, 4 dotted tomato bags.
+dull olive bags contain 1 striped black bag, 1 vibrant magenta bag.
+mirrored plum bags contain 1 clear gold bag, 5 pale green bags.
+dim tomato bags contain 4 drab gold bags, 2 shiny aqua bags.
+light lavender bags contain 1 muted violet bag.
+dim gray bags contain 3 light purple bags, 1 posh crimson bag, 1 faded brown bag.
+muted aqua bags contain 4 dull beige bags, 4 dull red bags.
+faded silver bags contain 1 mirrored cyan bag.
+shiny green bags contain 5 dull maroon bags.
+muted chartreuse bags contain 2 clear tan bags.
+plaid plum bags contain 1 dotted lime bag, 4 clear brown bags, 4 dull red bags.
+dotted silver bags contain 1 posh coral bag.
+dim crimson bags contain 4 faded violet bags, 1 striped silver bag.
+bright brown bags contain 1 bright coral bag, 3 posh brown bags, 4 drab tan bags.
+wavy cyan bags contain 3 clear gold bags, 1 mirrored salmon bag, 3 bright fuchsia bags, 2 light bronze bags.
+dull violet bags contain 5 striped white bags, 4 light blue bags, 4 dim black bags.
+vibrant olive bags contain 2 vibrant coral bags.
+bright coral bags contain 2 vibrant tan bags, 3 shiny indigo bags, 2 plaid indigo bags.
+dim turquoise bags contain 1 pale violet bag.
+striped crimson bags contain 2 faded gray bags.
+clear green bags contain 3 mirrored olive bags, 3 shiny tomato bags.
+faded violet bags contain 2 wavy coral bags, 2 dull tan bags, 1 dull silver bag, 1 bright orange bag.
+pale chartreuse bags contain 4 shiny crimson bags, 2 clear bronze bags.
+light plum bags contain 3 drab bronze bags, 1 bright bronze bag, 1 posh yellow bag.
+pale tomato bags contain 1 dim teal bag, 5 drab cyan bags, 3 muted coral bags, 2 dim chartreuse bags.
+plaid coral bags contain 1 striped tan bag, 3 vibrant cyan bags, 3 light beige bags, 2 dotted green bags.
+bright gray bags contain 4 mirrored teal bags, 4 striped brown bags, 1 dim green bag, 4 clear cyan bags.
+drab fuchsia bags contain 2 mirrored salmon bags, 4 posh orange bags, 3 faded crimson bags, 3 pale plum bags.
+light tomato bags contain 2 dotted gold bags, 1 dotted bronze bag.
+muted violet bags contain 2 light chartreuse bags.
+drab tan bags contain 2 light green bags, 5 bright red bags, 4 shiny beige bags.
+drab chartreuse bags contain 2 drab salmon bags, 2 dark brown bags, 4 clear turquoise bags.
+drab violet bags contain 4 faded red bags.
+posh cyan bags contain 4 bright violet bags.
+posh orange bags contain 4 pale plum bags, 5 posh aqua bags.
+plaid silver bags contain 1 dotted brown bag, 3 drab gold bags, 4 clear yellow bags.
+mirrored silver bags contain 3 shiny beige bags, 1 drab silver bag.
+faded gray bags contain no other bags.
+wavy tomato bags contain 1 bright brown bag, 3 striped red bags, 2 vibrant maroon bags.
+posh violet bags contain 2 dim aqua bags.
+bright blue bags contain 5 light lime bags, 2 faded violet bags, 3 light aqua bags, 4 vibrant coral bags.
+dark teal bags contain 5 muted fuchsia bags.
+striped fuchsia bags contain 1 wavy turquoise bag, 5 wavy green bags, 4 posh gold bags.
+posh maroon bags contain 2 dull red bags.
+shiny purple bags contain 2 clear tan bags.
+wavy lime bags contain 2 dark coral bags, 1 shiny gold bag.
+wavy silver bags contain 4 dotted white bags.
+shiny silver bags contain 2 plaid gold bags, 2 dim green bags, 5 plaid lime bags, 3 dull red bags.
+wavy red bags contain 3 vibrant brown bags, 4 bright indigo bags.
+dull chartreuse bags contain 4 dotted lime bags, 2 bright silver bags, 3 dull red bags, 4 wavy maroon bags.
+vibrant silver bags contain 1 bright fuchsia bag, 3 drab lavender bags, 2 drab olive bags, 3 dotted teal bags.
+striped gray bags contain 5 plaid orange bags, 1 wavy coral bag.
+striped green bags contain 4 wavy coral bags, 4 shiny gold bags, 3 dark brown bags, 5 vibrant brown bags.
+mirrored violet bags contain 3 dim silver bags, 1 posh tomato bag, 1 light salmon bag.
+dull purple bags contain 1 light gray bag, 3 wavy yellow bags, 1 wavy salmon bag.
+mirrored beige bags contain 4 dark cyan bags, 5 dull green bags.
+posh lime bags contain 3 posh chartreuse bags.
+vibrant tan bags contain 2 dull plum bags, 1 striped brown bag, 4 vibrant coral bags.
+dotted orange bags contain 1 mirrored olive bag, 5 drab silver bags.
+clear indigo bags contain 3 light lime bags, 4 dull coral bags.
+pale gray bags contain 1 faded black bag, 3 dim green bags, 4 wavy lavender bags, 2 posh brown bags.
+posh gold bags contain 5 dark tan bags, 2 dotted olive bags, 5 dark aqua bags.
+striped chartreuse bags contain 2 dull magenta bags, 1 posh tomato bag.
+mirrored bronze bags contain 2 faded fuchsia bags.
+clear salmon bags contain 4 posh bronze bags, 5 clear plum bags, 5 dull blue bags.
+posh purple bags contain 5 dim gray bags, 3 faded brown bags.
+faded lime bags contain 5 dim turquoise bags, 3 dark indigo bags, 2 vibrant gray bags, 1 muted silver bag.
+wavy beige bags contain 1 dark bronze bag, 4 dull plum bags, 4 mirrored silver bags.
+clear yellow bags contain 2 vibrant teal bags.
+vibrant plum bags contain 4 muted chartreuse bags, 4 posh silver bags.
+striped yellow bags contain 2 dull maroon bags, 5 bright red bags, 2 posh chartreuse bags.
+dark coral bags contain 3 dull tan bags.
+dull magenta bags contain no other bags.
+dark gold bags contain 1 dotted indigo bag, 4 shiny teal bags, 4 dotted silver bags.
+dim tan bags contain 1 striped lavender bag, 1 shiny tomato bag.
+muted maroon bags contain 2 dull salmon bags, 4 dim chartreuse bags, 3 bright aqua bags, 2 faded indigo bags.
+vibrant tomato bags contain 2 dark silver bags, 3 plaid purple bags.
+dotted lime bags contain 3 shiny crimson bags, 2 pale yellow bags.
+muted fuchsia bags contain 1 dull tan bag.
+bright tan bags contain 5 pale gold bags, 5 drab teal bags, 2 light blue bags.
+dark crimson bags contain 4 shiny orange bags, 3 faded purple bags, 3 bright white bags.
+striped tan bags contain 4 dotted turquoise bags, 4 drab lime bags, 5 dim teal bags.
+posh fuchsia bags contain 2 dotted olive bags, 2 mirrored beige bags, 3 shiny bronze bags.
+pale silver bags contain 4 vibrant lavender bags, 4 clear beige bags, 4 striped gold bags.
+posh aqua bags contain 4 drab lime bags, 4 dull tan bags, 5 vibrant tan bags.
+plaid salmon bags contain 5 dim coral bags, 2 wavy bronze bags.
+mirrored orange bags contain 4 vibrant gray bags.
+dim yellow bags contain 5 pale tan bags, 4 dark black bags.
+dotted coral bags contain 4 dotted chartreuse bags, 2 bright red bags, 1 vibrant white bag, 1 vibrant brown bag.
+muted crimson bags contain 4 striped orange bags, 5 pale yellow bags, 3 posh blue bags, 1 muted red bag.
+striped lavender bags contain 3 striped brown bags.
+striped maroon bags contain 2 shiny yellow bags.
+vibrant blue bags contain 3 faded cyan bags, 1 shiny lime bag, 3 dark tomato bags.
+pale lavender bags contain 4 plaid magenta bags, 4 striped blue bags.
+dull tan bags contain 4 shiny indigo bags, 2 light purple bags, 4 faded cyan bags.
+dotted beige bags contain 3 drab indigo bags.
+light indigo bags contain 1 faded cyan bag, 5 bright aqua bags, 1 shiny indigo bag.
+vibrant crimson bags contain 4 dotted fuchsia bags.
+wavy blue bags contain 4 wavy teal bags, 1 dull blue bag.
+vibrant chartreuse bags contain 4 striped orange bags.
+vibrant cyan bags contain 5 wavy coral bags.
+faded brown bags contain 5 faded turquoise bags.
+faded magenta bags contain 1 dull indigo bag, 4 plaid aqua bags, 4 dim crimson bags.
+mirrored coral bags contain 4 drab crimson bags, 2 light salmon bags, 2 clear indigo bags.
+faded cyan bags contain no other bags.
+dark brown bags contain 5 light purple bags.
+wavy violet bags contain 3 dull coral bags, 1 bright aqua bag, 3 shiny lavender bags.
+posh tomato bags contain 4 vibrant chartreuse bags, 4 mirrored teal bags.
+pale crimson bags contain 1 plaid orange bag, 1 dark violet bag, 3 plaid lavender bags.
+dark fuchsia bags contain 4 plaid beige bags, 2 plaid chartreuse bags.
+plaid magenta bags contain 3 clear lavender bags, 5 mirrored brown bags, 5 shiny bronze bags.
+striped blue bags contain 1 dull bronze bag, 1 dotted fuchsia bag, 1 light lavender bag, 1 clear turquoise bag.
+dotted olive bags contain 4 dotted turquoise bags, 5 dotted bronze bags, 3 pale yellow bags, 4 pale red bags.
+posh silver bags contain 3 pale violet bags, 1 plaid salmon bag, 1 posh coral bag.
+dotted chartreuse bags contain 3 bright blue bags.
+light coral bags contain 4 shiny fuchsia bags, 2 pale red bags, 1 muted silver bag, 2 bright cyan bags.
+pale brown bags contain 5 light aqua bags.
+dotted black bags contain 2 plaid purple bags, 1 mirrored aqua bag, 5 posh beige bags.
+posh coral bags contain 3 dark aqua bags, 2 pale yellow bags, 5 plaid blue bags, 4 dim aqua bags.
+shiny gray bags contain 1 bright gold bag, 1 muted bronze bag, 5 striped green bags, 5 shiny teal bags.
+drab orange bags contain 5 plaid salmon bags, 2 vibrant beige bags.
+plaid yellow bags contain 4 clear teal bags, 2 bright red bags.
+striped violet bags contain 4 mirrored fuchsia bags, 4 vibrant white bags, 3 dim teal bags.
+dim aqua bags contain 1 muted fuchsia bag, 1 dull tan bag.
+light orange bags contain 2 bright red bags, 4 dark white bags, 1 dim chartreuse bag, 5 faded fuchsia bags.
+faded salmon bags contain 5 wavy gray bags.
+shiny yellow bags contain 2 vibrant plum bags, 3 dim teal bags, 1 plaid tan bag, 5 posh plum bags.
+vibrant beige bags contain 2 wavy lavender bags, 4 posh chartreuse bags, 3 pale teal bags, 5 wavy lime bags.
+light fuchsia bags contain 3 clear brown bags, 3 bright lavender bags.
+pale magenta bags contain 4 posh silver bags.
+dark maroon bags contain 3 drab turquoise bags.
+faded beige bags contain 1 vibrant white bag, 4 drab red bags, 1 drab lavender bag.
+bright bronze bags contain 1 pale bronze bag, 3 muted silver bags, 2 striped coral bags, 3 clear gray bags.
+light silver bags contain 3 dotted lavender bags, 2 wavy lavender bags.
+muted salmon bags contain 2 drab tan bags, 5 wavy tomato bags.
+bright black bags contain 5 plaid tan bags.
+dim chartreuse bags contain 5 muted gold bags, 5 bright blue bags, 5 faded cyan bags.
+shiny white bags contain 4 bright tan bags.
+bright red bags contain 3 dull silver bags.
+dark aqua bags contain 2 dull red bags.
+drab plum bags contain 4 muted brown bags, 5 muted plum bags.
+muted yellow bags contain 5 light purple bags, 3 dotted silver bags, 3 faded turquoise bags.
+light violet bags contain 1 pale red bag, 4 dim silver bags, 2 mirrored bronze bags.
+pale lime bags contain 4 bright lavender bags.
+pale tan bags contain 4 striped green bags, 2 dotted chartreuse bags.
+dim green bags contain 1 light lime bag, 1 shiny beige bag.
+mirrored gold bags contain 4 mirrored white bags.
+dim silver bags contain 5 pale coral bags, 3 wavy coral bags.
+dull aqua bags contain 3 posh indigo bags, 5 dotted coral bags, 1 dark salmon bag, 3 striped crimson bags.
+posh yellow bags contain 1 dark bronze bag, 2 mirrored white bags, 2 light crimson bags.
+mirrored magenta bags contain 1 bright violet bag, 2 drab lavender bags, 3 pale violet bags, 2 plaid salmon bags.
+shiny chartreuse bags contain 2 dotted purple bags, 5 wavy red bags, 3 plaid beige bags.
+light black bags contain 1 dark chartreuse bag, 3 faded tomato bags.
+clear plum bags contain 5 vibrant brown bags, 3 dim coral bags, 4 mirrored brown bags, 1 faded black bag.
+pale violet bags contain 2 dull tan bags.
+bright fuchsia bags contain 4 dull orange bags.
+dotted teal bags contain 5 bright red bags, 3 wavy red bags, 1 dull coral bag, 3 clear plum bags.
+dotted blue bags contain 2 wavy beige bags, 3 muted purple bags.
+muted gray bags contain 3 faded aqua bags, 1 shiny olive bag, 5 clear salmon bags, 1 vibrant violet bag.
+dull beige bags contain 1 wavy lavender bag, 4 dark bronze bags, 5 dull tan bags.
+drab turquoise bags contain 3 posh gray bags, 5 drab red bags.
+vibrant yellow bags contain 2 shiny aqua bags, 4 light chartreuse bags.
+posh brown bags contain 3 bright green bags, 5 posh lavender bags.
+faded gold bags contain 4 vibrant maroon bags, 4 dotted purple bags.
+dotted turquoise bags contain 5 clear plum bags, 3 muted gold bags, 4 dark violet bags.
+dotted tan bags contain 5 dim aqua bags, 4 striped violet bags.
+posh crimson bags contain 4 striped blue bags, 5 dull magenta bags, 2 bright coral bags.
+muted white bags contain 5 dull olive bags.
+vibrant teal bags contain 5 dotted turquoise bags, 1 striped tan bag, 1 drab tan bag.
+dotted yellow bags contain 3 plaid turquoise bags, 2 posh yellow bags, 4 striped blue bags, 5 posh black bags.
+posh magenta bags contain 5 mirrored black bags.
+dotted green bags contain 4 dim crimson bags, 1 shiny lavender bag, 4 bright salmon bags, 1 plaid gray bag.
+bright green bags contain 3 bright aqua bags, 3 dull maroon bags, 4 dark brown bags.
+dark gray bags contain 5 muted purple bags, 2 striped blue bags, 4 faded lavender bags.
+bright crimson bags contain 2 striped olive bags, 3 muted blue bags.
+muted cyan bags contain 3 shiny tomato bags.
+light yellow bags contain 2 striped red bags, 4 shiny crimson bags.
+pale aqua bags contain 5 shiny yellow bags, 3 dark lavender bags, 3 posh white bags.
+clear red bags contain 1 dotted silver bag, 1 dull teal bag, 1 faded maroon bag, 1 dotted salmon bag.
+pale red bags contain 2 faded gray bags.
+dotted maroon bags contain 5 posh aqua bags, 3 dull silver bags.
+dull blue bags contain 4 light crimson bags, 3 light lime bags, 1 dark orange bag, 5 light indigo bags.
+posh turquoise bags contain 1 muted gold bag, 5 striped lavender bags, 3 dull salmon bags, 5 vibrant chartreuse bags.
+striped magenta bags contain 1 posh silver bag, 5 dark brown bags.
+pale blue bags contain 2 muted gold bags, 4 vibrant brown bags, 1 light lavender bag.
+vibrant violet bags contain 5 bright red bags.
+faded fuchsia bags contain 2 light lime bags, 4 bright lime bags, 3 pale violet bags.
+shiny coral bags contain 1 clear plum bag, 5 muted chartreuse bags, 1 muted violet bag, 5 striped yellow bags.
+pale olive bags contain 4 plaid lime bags, 1 posh salmon bag.
+wavy tan bags contain 3 faded gray bags.
+faded chartreuse bags contain 3 dim coral bags, 1 mirrored bronze bag, 3 posh bronze bags.
+mirrored brown bags contain 1 faded violet bag, 4 dull maroon bags, 5 dotted magenta bags.
+clear white bags contain 5 muted magenta bags, 4 dull magenta bags, 3 pale plum bags, 4 drab indigo bags.
+drab maroon bags contain 2 clear beige bags, 3 wavy beige bags, 5 faded purple bags.
+striped silver bags contain 3 drab tomato bags.
+faded plum bags contain 1 clear teal bag, 3 bright aqua bags.
+plaid violet bags contain 2 drab violet bags, 4 muted turquoise bags, 5 muted indigo bags.
+clear black bags contain 5 muted fuchsia bags, 1 muted coral bag, 2 light black bags.
+vibrant maroon bags contain 1 dark lavender bag, 1 pale crimson bag, 4 bright indigo bags, 5 mirrored maroon bags.
+drab indigo bags contain 2 dim coral bags, 1 drab green bag, 2 shiny lavender bags.
+drab olive bags contain 2 dark aqua bags, 4 striped brown bags.
+dull crimson bags contain 3 dull cyan bags.
+wavy teal bags contain 4 striped orange bags, 2 drab cyan bags.
+dark red bags contain 2 dull maroon bags, 4 muted plum bags, 4 dull plum bags.
+striped salmon bags contain 3 bright red bags, 1 light aqua bag, 4 wavy gold bags.
+mirrored tan bags contain 5 dotted olive bags, 2 dim tomato bags, 2 mirrored tomato bags, 4 clear teal bags.
+striped white bags contain 2 pale coral bags, 2 shiny green bags.
+shiny tomato bags contain 5 pale coral bags, 5 dull beige bags.
+vibrant indigo bags contain 2 dim black bags, 4 dim blue bags, 3 dim white bags.
+wavy lavender bags contain 4 faded bronze bags, 4 muted red bags, 3 light lime bags, 4 muted gold bags.
+shiny turquoise bags contain 2 dull red bags, 5 faded gray bags, 1 muted turquoise bag.
+shiny lavender bags contain 5 bright aqua bags.
+posh tan bags contain 1 shiny yellow bag, 3 drab magenta bags.
+light green bags contain 4 bright red bags, 1 vibrant coral bag.
+drab black bags contain 5 faded tomato bags, 3 dotted chartreuse bags.
+clear chartreuse bags contain 3 wavy bronze bags, 4 plaid purple bags, 3 dark orange bags.
+dull black bags contain 1 wavy teal bag, 3 light lavender bags, 2 striped indigo bags.
+wavy black bags contain 2 clear orange bags, 4 muted purple bags.
+pale plum bags contain 1 bright coral bag, 1 drab tan bag, 1 plaid fuchsia bag, 1 dotted fuchsia bag.
+dotted violet bags contain 3 bright black bags.
+posh red bags contain 3 bright black bags.
+plaid lime bags contain 5 posh beige bags, 1 dotted turquoise bag.
+wavy aqua bags contain 1 dark yellow bag, 3 drab indigo bags.
+dim magenta bags contain 3 dark violet bags.
+drab aqua bags contain 5 posh orange bags, 1 dark silver bag, 4 plaid purple bags, 2 wavy teal bags.
+dull brown bags contain 4 light lime bags.
+striped orange bags contain 5 light crimson bags, 3 muted tan bags, 5 dotted coral bags, 3 plaid blue bags.
+muted brown bags contain 1 posh blue bag, 4 dotted magenta bags, 3 dull coral bags.
+faded blue bags contain 5 striped black bags, 1 vibrant yellow bag.
+plaid indigo bags contain 3 dark brown bags, 5 light purple bags, 4 light aqua bags, 3 light green bags.
+plaid turquoise bags contain 5 dotted teal bags.
+light turquoise bags contain 2 dull salmon bags, 5 dotted tan bags.
+dim purple bags contain 4 muted white bags, 5 drab purple bags.
+pale coral bags contain 5 posh gray bags.
+clear lime bags contain 3 dim magenta bags, 3 plaid tomato bags, 1 drab magenta bag, 3 shiny purple bags.
+dim black bags contain 3 clear gold bags, 4 muted violet bags.
+light maroon bags contain 4 muted yellow bags, 1 pale cyan bag, 2 mirrored turquoise bags, 4 dull lavender bags.
+clear magenta bags contain 2 shiny magenta bags, 2 muted chartreuse bags.
+striped bronze bags contain 5 clear tan bags, 1 drab lavender bag, 2 pale crimson bags.
+dark salmon bags contain 1 vibrant plum bag, 5 drab tan bags, 4 drab coral bags, 4 dull tan bags.
+vibrant salmon bags contain 2 muted olive bags.
+dim gold bags contain 2 dim olive bags, 5 plaid olive bags, 2 posh orange bags.
+wavy chartreuse bags contain 4 shiny yellow bags, 4 vibrant blue bags.
+vibrant brown bags contain 3 striped brown bags, 4 muted red bags, 2 shiny indigo bags.
+plaid maroon bags contain 2 muted teal bags, 2 pale yellow bags, 2 bright beige bags, 5 striped yellow bags.
+dim indigo bags contain 4 dull tomato bags, 4 clear cyan bags, 2 shiny salmon bags, 1 bright aqua bag.
+muted red bags contain 3 dull tan bags, 4 dull magenta bags, 1 bright aqua bag.
+posh beige bags contain 5 shiny black bags, 3 dotted magenta bags, 3 drab blue bags, 2 muted coral bags.
+pale fuchsia bags contain 3 dark brown bags, 5 posh gold bags.
+dark bronze bags contain 1 dim green bag, 5 posh chartreuse bags.
+dim coral bags contain 3 dull coral bags, 3 striped brown bags.
+drab crimson bags contain 2 dark bronze bags, 4 shiny indigo bags, 3 dull tan bags.
+bright indigo bags contain 3 bright blue bags.
+pale yellow bags contain 5 dim aqua bags, 1 vibrant brown bag, 2 vibrant tan bags, 3 wavy lavender bags.
+drab salmon bags contain 1 dotted indigo bag, 3 muted chartreuse bags, 5 dark olive bags.
+muted orange bags contain 4 faded lime bags, 2 dull coral bags, 5 vibrant magenta bags, 4 dull magenta bags.
+striped gold bags contain 2 dull silver bags, 5 bright lavender bags, 5 dim teal bags, 5 dark coral bags.
+posh chartreuse bags contain 3 dim teal bags, 5 light aqua bags.
+shiny blue bags contain 3 dull tan bags, 5 muted magenta bags.
+muted silver bags contain 3 wavy blue bags, 2 dim teal bags, 5 muted bronze bags.
+shiny bronze bags contain 1 light green bag, 4 vibrant magenta bags.
+wavy coral bags contain no other bags.
+shiny orange bags contain 2 muted purple bags.
+posh teal bags contain 4 clear plum bags.
+striped turquoise bags contain 3 muted indigo bags.
+dim bronze bags contain 2 shiny silver bags, 1 light silver bag, 2 dim indigo bags, 4 dim tomato bags.
+plaid white bags contain 4 drab turquoise bags.
+wavy indigo bags contain 3 clear gold bags, 5 mirrored bronze bags.
+faded teal bags contain 4 mirrored white bags.
+shiny fuchsia bags contain 3 drab indigo bags.
+dim red bags contain 3 clear bronze bags.
+dotted brown bags contain 4 wavy maroon bags, 5 drab green bags, 3 dark purple bags.
+dark tomato bags contain 3 vibrant coral bags, 5 dull coral bags, 2 drab cyan bags, 1 posh blue bag.
+clear teal bags contain 3 dark white bags.
+dark silver bags contain 3 dark cyan bags, 4 plaid salmon bags.
+wavy fuchsia bags contain 4 bright brown bags, 4 bright aqua bags, 5 light orange bags.
+light bronze bags contain 4 clear plum bags.
+striped purple bags contain 1 dim indigo bag.
+clear tomato bags contain 4 mirrored tomato bags, 3 muted indigo bags, 1 striped tan bag.
+muted turquoise bags contain 5 faded beige bags, 4 clear crimson bags, 2 bright teal bags.
+dull cyan bags contain 5 mirrored aqua bags, 2 shiny aqua bags, 3 light black bags, 4 bright coral bags.
+plaid crimson bags contain 2 mirrored teal bags, 2 dull fuchsia bags.
+shiny maroon bags contain 1 posh gold bag.
+dim white bags contain 5 striped brown bags, 2 dull magenta bags, 5 plaid tan bags.
+muted green bags contain 2 dull magenta bags, 5 clear cyan bags.
+plaid teal bags contain 2 dark tan bags, 3 pale lime bags.
+dotted lavender bags contain 2 posh aqua bags, 3 dull cyan bags.
+light salmon bags contain 5 dark silver bags.
+faded white bags contain 2 wavy maroon bags, 3 dull cyan bags.
+dull tomato bags contain 2 dim aqua bags, 4 posh lavender bags, 1 faded red bag.
+dark olive bags contain 5 clear bronze bags, 2 drab plum bags.
+pale indigo bags contain 2 mirrored beige bags, 5 wavy turquoise bags, 4 striped green bags, 2 dotted lavender bags.
+plaid purple bags contain 1 light lime bag.
+clear purple bags contain 3 vibrant white bags.
+dark yellow bags contain 2 pale olive bags, 4 pale cyan bags, 5 bright teal bags.
+muted beige bags contain 2 posh lime bags, 5 shiny gray bags, 2 dull blue bags.
+vibrant orange bags contain 5 posh crimson bags, 4 light chartreuse bags.
+light magenta bags contain 2 plaid maroon bags, 1 posh beige bag, 5 pale salmon bags.
+dotted crimson bags contain 5 dark chartreuse bags.
+striped coral bags contain 2 dim aqua bags.
+striped aqua bags contain 3 posh salmon bags, 3 dull red bags.
+mirrored salmon bags contain 5 bright red bags, 2 light green bags, 3 clear black bags, 5 posh brown bags.
+posh white bags contain 4 drab violet bags, 2 dotted silver bags.
+posh blue bags contain 4 dull maroon bags, 3 vibrant coral bags.
+dim orange bags contain 2 dull olive bags.
+shiny teal bags contain 1 faded tomato bag, 4 muted violet bags.
+mirrored maroon bags contain 3 dull blue bags.
+dark lavender bags contain 1 drab red bag, 3 shiny indigo bags, 4 faded beige bags, 1 drab turquoise bag.
+shiny olive bags contain 3 dark violet bags, 1 striped gold bag, 2 mirrored lime bags.
+bright violet bags contain 2 wavy bronze bags, 3 drab olive bags, 5 mirrored olive bags, 2 wavy lavender bags.
+clear olive bags contain 5 faded turquoise bags.
+mirrored lavender bags contain 1 light white bag, 4 light purple bags, 3 wavy lavender bags, 2 shiny lime bags.
+pale turquoise bags contain 4 dark tan bags.
+shiny salmon bags contain 1 shiny gold bag, 5 drab turquoise bags.
+vibrant gray bags contain 3 posh brown bags.
+dark indigo bags contain 1 mirrored black bag, 5 dull beige bags, 4 shiny beige bags, 3 drab lavender bags.
+light teal bags contain 5 dark olive bags, 5 vibrant chartreuse bags, 3 plaid salmon bags, 5 light yellow bags.
+clear violet bags contain 3 light crimson bags.
+clear tan bags contain 3 striped orange bags, 4 wavy lavender bags, 3 striped silver bags.
+clear bronze bags contain 2 plaid beige bags.
+clear gray bags contain 4 dotted cyan bags, 4 vibrant plum bags.
+drab cyan bags contain 1 light aqua bag, 1 drab teal bag, 3 bright orange bags, 3 dark white bags.
+plaid beige bags contain 3 dull green bags.
+wavy gold bags contain 4 shiny olive bags, 3 bright tan bags.
+clear aqua bags contain 3 posh chartreuse bags, 4 drab silver bags, 5 clear gray bags.
+bright chartreuse bags contain 2 light violet bags, 3 vibrant gray bags.
+plaid black bags contain 2 posh gray bags.
+light beige bags contain 4 dotted olive bags, 5 dull olive bags, 1 faded orange bag.
+mirrored teal bags contain 4 mirrored aqua bags.
+bright magenta bags contain 1 mirrored magenta bag, 3 bright blue bags, 1 vibrant blue bag, 2 drab gold bags.
+dim maroon bags contain 4 light bronze bags, 5 clear violet bags.
+light lime bags contain 4 plaid indigo bags.
+posh lavender bags contain 4 dark brown bags.
+clear beige bags contain 4 posh silver bags, 3 dull coral bags, 2 posh gray bags.
+drab bronze bags contain 4 plaid maroon bags.
+mirrored purple bags contain 3 dim magenta bags.
+dark magenta bags contain 4 faded maroon bags, 1 drab crimson bag, 5 dotted brown bags, 2 bright teal bags.
+dim brown bags contain 3 muted olive bags, 5 drab green bags, 1 mirrored olive bag.
+dark plum bags contain 2 vibrant tan bags.
+bright turquoise bags contain 1 mirrored aqua bag, 3 clear plum bags.
+muted black bags contain 5 faded cyan bags, 5 pale tan bags, 2 dotted chartreuse bags.
+dotted gray bags contain 3 posh plum bags.
+vibrant black bags contain 2 vibrant magenta bags, 5 faded cyan bags.
+mirrored cyan bags contain 2 clear cyan bags, 4 light aqua bags, 5 drab blue bags, 1 drab gold bag.
+wavy purple bags contain 5 striped magenta bags, 3 clear maroon bags, 1 mirrored green bag, 1 pale black bag.
+drab blue bags contain 3 mirrored lime bags, 1 mirrored blue bag.
+clear maroon bags contain 5 bright orange bags.
+shiny cyan bags contain 2 clear gray bags, 5 pale crimson bags.
+pale cyan bags contain 2 wavy turquoise bags, 5 wavy salmon bags.
+plaid gold bags contain 1 clear lavender bag, 1 bright beige bag.
+mirrored lime bags contain 2 dull tan bags, 3 shiny beige bags.
+drab green bags contain 1 vibrant yellow bag.
+dull red bags contain 5 plaid blue bags, 5 clear brown bags, 3 pale salmon bags, 2 dark orange bags.
+bright beige bags contain 4 dull silver bags, 5 vibrant brown bags, 4 drab red bags, 2 pale violet bags.
+clear silver bags contain 4 drab indigo bags, 2 clear salmon bags.
+posh bronze bags contain 5 bright indigo bags, 5 dotted purple bags, 1 dark violet bag, 2 dark orange bags.
+posh salmon bags contain 5 bright red bags, 3 striped green bags, 3 dark brown bags.
+clear cyan bags contain 5 dark chartreuse bags, 1 bright indigo bag, 4 pale yellow bags, 2 vibrant coral bags.
+mirrored blue bags contain 2 vibrant white bags.
+mirrored yellow bags contain 5 dotted gray bags, 4 dull maroon bags, 2 striped violet bags, 5 clear tomato bags.
+striped teal bags contain 2 clear black bags, 3 pale coral bags.
+faded orange bags contain 2 dark bronze bags.
+mirrored indigo bags contain 3 light tomato bags, 2 shiny crimson bags.
+pale green bags contain 4 light chartreuse bags.
+plaid cyan bags contain 4 plaid fuchsia bags, 2 shiny teal bags, 3 dotted fuchsia bags, 3 dim red bags.
+muted gold bags contain 2 dull tan bags, 1 faded bronze bag, 4 dull maroon bags.
+wavy green bags contain 5 pale coral bags, 1 dull blue bag, 4 drab blue bags, 1 striped tan bag.
+light chartreuse bags contain 4 striped brown bags, 5 plaid purple bags, 4 drab cyan bags, 3 dull plum bags.
+dotted cyan bags contain 4 shiny black bags.
+light purple bags contain no other bags.
+dotted aqua bags contain 4 light gray bags, 2 light purple bags, 5 mirrored lime bags.
+drab gold bags contain 2 bright green bags, 5 bright indigo bags.
+posh gray bags contain 5 bright orange bags, 5 bright blue bags.
+striped red bags contain 4 drab green bags, 1 clear cyan bag.
+dotted bronze bags contain 5 light orange bags.
+muted plum bags contain 2 bright black bags, 3 dotted tomato bags, 2 vibrant brown bags.
+mirrored black bags contain 3 plaid chartreuse bags, 2 shiny indigo bags, 2 shiny beige bags.
+drab lavender bags contain 5 drab cyan bags, 1 muted purple bag, 1 wavy red bag, 3 drab crimson bags.
+vibrant turquoise bags contain 3 shiny beige bags, 3 striped brown bags, 5 dim teal bags.
+muted tan bags contain 1 plaid purple bag, 3 shiny beige bags, 1 drab gold bag.
+pale beige bags contain 5 bright silver bags.
+wavy olive bags contain 4 dotted turquoise bags, 4 dull silver bags, 1 bright gold bag.
+dim olive bags contain 5 light lavender bags, 4 shiny tomato bags, 4 clear cyan bags.
+wavy salmon bags contain 4 bright aqua bags.
+dotted gold bags contain 3 shiny red bags, 3 dull fuchsia bags.
+shiny violet bags contain 3 dotted tomato bags, 1 drab coral bag.
+striped plum bags contain 4 drab beige bags, 3 clear tan bags, 5 light aqua bags, 1 shiny fuchsia bag.
+clear lavender bags contain 2 bright aqua bags, 3 dull silver bags, 3 bright green bags, 2 bright orange bags.
+faded maroon bags contain 5 dark indigo bags, 1 posh fuchsia bag.
+vibrant red bags contain 4 striped fuchsia bags, 3 drab orange bags, 1 clear brown bag, 1 plaid turquoise bag.
+dull coral bags contain 2 dim teal bags, 3 faded bronze bags.
+pale salmon bags contain 3 dull magenta bags, 1 light crimson bag.
+dotted magenta bags contain 4 dull maroon bags, 2 bright lime bags, 4 plaid indigo bags, 4 faded cyan bags.
+wavy gray bags contain 4 muted gray bags, 3 shiny magenta bags, 1 posh teal bag.
+light red bags contain 4 shiny chartreuse bags.
+dim blue bags contain 4 vibrant orange bags.
+muted bronze bags contain 5 mirrored aqua bags, 4 dim green bags.
+drab lime bags contain 1 drab cyan bag, 3 pale crimson bags, 4 bright green bags, 3 drab lavender bags.
+light white bags contain 5 bright green bags.
+bright teal bags contain 4 shiny brown bags, 4 dark silver bags.
+striped beige bags contain 2 shiny magenta bags.
+wavy magenta bags contain 5 pale bronze bags, 5 pale plum bags, 3 muted silver bags.
+dark orange bags contain 1 drab tomato bag, 3 striped brown bags, 1 dim teal bag, 5 bright beige bags.
+striped indigo bags contain 1 vibrant gold bag, 1 shiny green bag.
+clear coral bags contain 2 shiny gray bags.
+faded yellow bags contain 4 faded gold bags, 2 bright turquoise bags, 5 dark silver bags, 3 wavy coral bags.
+dim plum bags contain 1 clear purple bag, 4 light brown bags.
+mirrored turquoise bags contain 5 wavy indigo bags, 3 dark fuchsia bags, 5 plaid white bags, 2 dim turquoise bags.
+posh black bags contain 2 striped black bags, 5 dim teal bags, 3 bright silver bags, 5 posh beige bags.
+dotted fuchsia bags contain 1 faded turquoise bag, 2 shiny lavender bags, 4 posh salmon bags, 1 clear olive bag.
+faded lavender bags contain 2 striped yellow bags, 1 posh lavender bag.
+dim lime bags contain 2 wavy gray bags, 5 clear gray bags.
+vibrant bronze bags contain 3 drab tomato bags, 5 bright tan bags.
+dull plum bags contain 5 bright red bags, 4 dull magenta bags.
+dim teal bags contain 4 light purple bags, 4 plaid lavender bags, 1 dull magenta bag.
+dull yellow bags contain 4 vibrant orange bags, 1 dark tomato bag, 5 pale tan bags.
+dull green bags contain 2 bright blue bags, 5 dull red bags.
+light crimson bags contain 5 dull maroon bags, 4 muted gold bags.
+dark black bags contain 1 dim silver bag, 3 plaid magenta bags.
+bright lavender bags contain 4 muted fuchsia bags.
+drab coral bags contain 4 shiny chartreuse bags, 3 posh yellow bags, 3 wavy indigo bags.
+mirrored crimson bags contain 3 posh maroon bags, 5 striped olive bags, 3 mirrored magenta bags.
+muted coral bags contain 3 wavy violet bags, 1 dotted chartreuse bag, 1 shiny beige bag.
+vibrant gold bags contain 2 dull orange bags, 1 clear chartreuse bag.
+wavy orange bags contain 5 dark bronze bags.
+mirrored white bags contain 5 clear gold bags, 3 drab tomato bags, 4 dotted bronze bags, 3 striped orange bags.
+clear gold bags contain 3 drab indigo bags, 4 wavy violet bags, 2 shiny salmon bags, 4 light brown bags.
+shiny magenta bags contain 5 drab silver bags, 2 muted gold bags.
+dim violet bags contain 1 posh lime bag, 4 shiny orange bags, 2 posh chartreuse bags.
+striped olive bags contain 4 plaid indigo bags, 5 dim chartreuse bags, 4 clear lavender bags.
+plaid gray bags contain 3 shiny gold bags, 2 dull coral bags.
+clear crimson bags contain 4 shiny aqua bags, 3 light crimson bags, 5 dim chartreuse bags.
+drab silver bags contain 1 dim teal bag, 3 faded cyan bags, 1 shiny indigo bag.
+mirrored green bags contain 5 dotted lime bags, 4 pale cyan bags.
+bright aqua bags contain no other bags.
+bright plum bags contain 4 dim aqua bags, 2 dull crimson bags, 1 wavy maroon bag.
+vibrant lavender bags contain 1 plaid tan bag, 3 vibrant brown bags, 3 drab gold bags, 4 faded red bags.
+pale white bags contain 3 bright brown bags, 4 mirrored beige bags.
+plaid lavender bags contain 1 dull magenta bag, 2 dull silver bags, 1 shiny indigo bag.
+bright salmon bags contain 1 striped coral bag, 4 plaid lavender bags, 1 muted red bag, 1 drab red bag.
+plaid olive bags contain 5 faded turquoise bags, 4 dim green bags, 2 striped beige bags.
+wavy plum bags contain 1 clear lavender bag, 2 faded brown bags.
+clear fuchsia bags contain 1 muted bronze bag.
+wavy turquoise bags contain 5 shiny lime bags, 1 drab olive bag, 4 dim white bags, 1 dotted gray bag.
+vibrant aqua bags contain 2 faded lavender bags.
+dotted white bags contain 3 muted crimson bags, 5 mirrored white bags, 1 mirrored fuchsia bag.
+bright purple bags contain 2 dotted chartreuse bags, 4 posh cyan bags, 3 bright plum bags.
+light aqua bags contain 1 plaid lavender bag, 3 wavy coral bags, 5 shiny indigo bags.
+drab yellow bags contain 4 shiny teal bags, 2 dotted green bags, 5 vibrant silver bags, 3 dotted turquoise bags.
+mirrored olive bags contain 1 dull plum bag.
+light olive bags contain 1 shiny coral bag, 4 drab white bags, 3 dim turquoise bags, 4 dull gold bags.
+shiny indigo bags contain no other bags.
+dull gold bags contain 3 dark indigo bags.
+bright tomato bags contain 5 muted blue bags.
+faded purple bags contain 4 bright orange bags, 2 faded violet bags.
+drab magenta bags contain 3 wavy lavender bags, 2 drab cyan bags, 2 clear beige bags, 4 bright indigo bags.
+striped lime bags contain 4 light tan bags.
+light gold bags contain 2 pale plum bags.
+striped black bags contain 1 plaid salmon bag, 2 plaid beige bags, 4 dotted teal bags, 2 posh chartreuse bags.
+faded tomato bags contain 2 striped yellow bags, 4 muted red bags.
+dull fuchsia bags contain 5 dotted olive bags, 2 muted purple bags.
+pale purple bags contain 4 posh silver bags, 4 wavy yellow bags.
+bright olive bags contain 5 shiny fuchsia bags, 5 dull crimson bags, 5 drab red bags, 5 posh turquoise bags.
+vibrant fuchsia bags contain 1 vibrant beige bag, 5 shiny magenta bags.
+faded turquoise bags contain 5 light lime bags, 4 dark white bags.
+plaid orange bags contain 5 vibrant coral bags, 4 light crimson bags, 4 plaid chartreuse bags, 1 dull green bag.
+posh indigo bags contain 3 wavy green bags, 2 shiny orange bags, 5 faded violet bags, 2 dotted coral bags.
+mirrored red bags contain 4 mirrored olive bags, 1 dark silver bag, 1 dull red bag.
+dim salmon bags contain 1 striped salmon bag, 5 faded gray bags.
+dim cyan bags contain 3 wavy olive bags, 5 drab purple bags, 3 mirrored bronze bags.
+light blue bags contain 2 striped bronze bags, 4 dull white bags, 1 posh bronze bag.
+dull turquoise bags contain 4 striped red bags, 1 light lavender bag, 5 plaid bronze bags, 1 mirrored brown bag.
+vibrant coral bags contain 1 bright orange bag.
+striped cyan bags contain 2 dark white bags, 4 drab red bags, 2 plaid salmon bags.
+muted tomato bags contain 4 drab red bags, 3 vibrant silver bags, 4 clear fuchsia bags, 3 wavy white bags.
+dotted red bags contain 1 light blue bag.
+dark beige bags contain 2 posh lime bags, 3 striped black bags.
+dark cyan bags contain 1 dim chartreuse bag, 2 shiny beige bags, 4 dotted magenta bags, 4 light chartreuse bags.
+dull lime bags contain 3 muted chartreuse bags.
+light brown bags contain 3 mirrored brown bags.
+vibrant magenta bags contain 1 dim green bag.
+shiny brown bags contain 5 bright brown bags, 3 faded cyan bags, 5 clear tan bags, 2 plaid maroon bags.
+drab purple bags contain 1 shiny indigo bag, 4 striped yellow bags.

2020/d08/ex1/ex1.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+
+
+import sys
+from typing import List, Tuple
+
+
+def run(code: List[Tuple[str, int]]) -> int:
+    accumulator = 0
+    rip = 0
+
+    def acc(val: int) -> None:
+        nonlocal accumulator
+        nonlocal rip
+        accumulator += val
+        rip += 1
+
+    def nop(val: int) -> None:
+        nonlocal rip
+        rip += 1
+
+    def jmp(val: int) -> None:
+        nonlocal rip
+        rip += val
+
+    instrs = {
+        "acc": acc,
+        "jmp": jmp,
+        "nop": nop,
+    }
+    seen = set()
+
+    while rip not in seen:
+        seen |= {rip}
+        func = instrs[code[rip][0]]
+        func(code[rip][1])
+
+    return accumulator
+
+
+def solve(raw: List[str]) -> int:
+    return run([(line[:3], int(line[3:])) for line in raw])
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d08/ex1/input

@@ -0,0 +1,675 @@
+acc -8
+jmp +5
+acc +0
+acc +44
+acc +42
+jmp +324
+acc -17
+jmp +1
+acc -17
+jmp +51
+acc -13
+acc +4
+jmp +1
+nop +608
+jmp +274
+acc -17
+jmp +169
+acc +28
+nop +508
+jmp +1
+jmp +570
+acc +22
+acc -14
+jmp +377
+acc -13
+acc +27
+jmp +474
+acc -5
+jmp +1
+acc +12
+jmp +37
+jmp +184
+acc +36
+acc +32
+acc -8
+jmp +465
+acc -13
+acc +18
+jmp +169
+acc +20
+acc +26
+acc +23
+jmp +333
+jmp +584
+acc +9
+acc +28
+acc +28
+nop +571
+jmp +143
+acc +39
+acc +39
+acc -16
+jmp +361
+acc +48
+acc +3
+acc +15
+nop +4
+jmp +504
+acc +6
+jmp +285
+acc +26
+acc +33
+jmp +1
+acc +36
+jmp +577
+acc +36
+jmp +6
+nop +498
+acc +42
+jmp +496
+acc +10
+jmp +74
+acc +17
+acc +16
+acc +30
+jmp +254
+acc -3
+acc +16
+acc -2
+nop +106
+jmp +541
+acc -15
+jmp +579
+jmp +165
+acc +22
+acc -6
+acc +29
+acc -19
+jmp +342
+acc -19
+jmp +340
+acc +13
+acc +25
+acc +29
+jmp +269
+acc -14
+acc +27
+acc +41
+acc +49
+jmp +181
+nop +350
+jmp +1
+nop +437
+acc +34
+jmp +494
+acc +19
+acc +2
+acc +44
+jmp +558
+acc +10
+jmp +44
+nop +4
+nop -80
+nop +540
+jmp +16
+acc +28
+jmp +14
+acc +13
+nop +399
+acc +29
+nop -60
+jmp -6
+acc +41
+acc +30
+jmp +232
+acc +28
+nop +495
+acc +15
+acc +48
+jmp +157
+nop +483
+jmp -59
+acc +5
+acc +30
+acc +30
+acc +2
+jmp +349
+acc +11
+acc +27
+acc +1
+jmp +367
+acc +8
+acc +45
+acc +11
+jmp +171
+jmp -113
+acc +48
+jmp -38
+acc +12
+jmp +145
+acc +8
+nop +29
+nop +319
+jmp +154
+nop +166
+jmp +395
+nop +15
+jmp +237
+acc +22
+acc +3
+acc +42
+acc +1
+jmp +288
+jmp -63
+nop +489
+acc +33
+jmp +247
+jmp +1
+acc -8
+acc +9
+jmp +413
+acc -17
+acc +3
+acc +3
+jmp +432
+nop -17
+acc +36
+nop +198
+acc +45
+jmp +109
+nop +242
+acc +40
+acc +11
+jmp +448
+jmp +437
+acc +3
+acc +49
+acc +27
+jmp +221
+nop +158
+jmp +143
+acc +50
+jmp -70
+acc +46
+acc +8
+acc +35
+acc -3
+jmp +104
+acc +11
+acc +0
+jmp +34
+nop +132
+jmp +425
+jmp +219
+acc -12
+acc +48
+jmp +21
+jmp +434
+acc +30
+acc +1
+acc +40
+jmp +435
+jmp +132
+acc +40
+jmp +236
+jmp +179
+jmp -149
+acc +25
+acc +40
+acc -9
+acc +49
+jmp +445
+nop +399
+acc -14
+nop +374
+acc +0
+jmp +152
+acc +39
+nop +322
+acc +49
+nop +117
+jmp -19
+acc +24
+jmp +385
+acc +17
+acc +39
+acc +44
+acc -8
+jmp -58
+acc -18
+nop -76
+jmp +66
+acc +14
+jmp +427
+acc +11
+acc +47
+acc +9
+jmp +1
+acc +42
+jmp -7
+acc -16
+acc -13
+jmp +409
+acc +1
+acc +35
+acc +34
+jmp +371
+acc +24
+acc +46
+acc -4
+jmp +367
+acc +19
+acc +27
+acc -8
+acc +41
+jmp -184
+nop -185
+acc +23
+acc -8
+acc +35
+jmp -9
+acc -7
+nop -101
+nop +121
+acc +37
+jmp -72
+acc +24
+jmp +1
+nop -124
+jmp +163
+acc +37
+acc -12
+jmp +331
+acc -12
+acc +1
+jmp +232
+jmp -233
+jmp -72
+acc +28
+jmp +169
+acc +43
+acc +18
+nop +108
+jmp -184
+acc -4
+acc -10
+nop +317
+acc +48
+jmp +173
+nop +45
+jmp -73
+acc +35
+jmp +198
+acc -15
+acc +46
+acc +31
+jmp +41
+nop +169
+jmp +1
+nop -92
+nop -271
+jmp -113
+jmp +1
+nop -42
+jmp +42
+nop -283
+acc +22
+nop +200
+jmp -17
+jmp +1
+acc +49
+nop +35
+nop -185
+jmp +298
+acc +1
+jmp +1
+nop +301
+acc +19
+jmp -34
+jmp +163
+jmp +1
+acc +49
+jmp -115
+jmp -62
+acc +8
+acc +5
+acc -6
+jmp -146
+acc -4
+nop -202
+acc +47
+jmp -114
+acc +8
+jmp +57
+acc +37
+jmp +61
+jmp +267
+acc +2
+acc +28
+nop -20
+jmp -186
+acc +24
+nop +269
+acc +48
+acc +45
+jmp -22
+acc +11
+acc +36
+jmp -267
+acc +7
+nop -45
+nop -231
+jmp +32
+nop +220
+acc +19
+jmp -250
+acc +33
+jmp -169
+acc +45
+acc -13
+acc +0
+acc +44
+jmp +6
+acc +42
+jmp +84
+acc +48
+jmp -332
+jmp +213
+acc -16
+acc +31
+acc +17
+acc +3
+jmp -75
+jmp +1
+acc +11
+acc +4
+jmp -271
+acc -12
+nop +97
+nop +11
+jmp -43
+acc +30
+jmp +1
+jmp +49
+jmp -379
+nop -51
+acc +0
+acc -8
+nop -191
+jmp -346
+jmp -255
+acc +2
+acc +21
+acc -16
+nop +217
+jmp -30
+acc +31
+jmp -270
+jmp -324
+jmp +130
+acc +49
+nop +179
+jmp -37
+acc +11
+acc +15
+acc +29
+acc +17
+jmp -237
+acc +47
+acc -13
+acc +6
+jmp +169
+nop +54
+acc -12
+jmp -233
+nop +33
+acc +17
+acc +14
+acc +21
+jmp -275
+acc -8
+acc +1
+nop +229
+jmp +1
+jmp +119
+jmp -193
+nop +217
+jmp +95
+acc -2
+acc +1
+acc +41
+jmp -332
+acc +44
+nop -343
+acc +23
+jmp -165
+acc +7
+acc -12
+nop -339
+jmp +9
+nop -390
+acc -17
+acc +43
+jmp -138
+nop -247
+acc +42
+acc +0
+jmp +170
+acc +48
+jmp -139
+acc +6
+acc +13
+acc +35
+jmp -85
+nop -117
+jmp -307
+acc +25
+acc -10
+acc -14
+acc +0
+jmp -355
+jmp +102
+acc -8
+acc +47
+acc +36
+jmp +42
+acc +33
+acc +17
+acc +46
+jmp -331
+jmp +1
+acc -11
+jmp +1
+acc +27
+jmp +147
+acc -14
+nop -28
+acc +32
+jmp -482
+acc +11
+nop -390
+jmp -485
+acc -12
+acc +37
+acc +33
+acc +28
+jmp -32
+acc +42
+acc -11
+jmp -460
+acc +36
+acc +6
+acc +39
+jmp +80
+nop +123
+acc -13
+jmp -97
+acc +25
+acc +46
+acc +13
+nop -450
+jmp +84
+acc +3
+nop -260
+jmp +1
+acc +22
+jmp -510
+acc -4
+acc +17
+acc -19
+jmp -420
+acc -14
+acc +26
+acc +29
+acc +17
+jmp -458
+acc -10
+acc +23
+nop -2
+jmp -196
+acc -5
+jmp -416
+acc +49
+jmp -165
+acc +4
+acc +7
+acc +20
+nop -217
+jmp +103
+jmp +5
+acc -1
+acc +2
+jmp +1
+jmp +84
+acc -14
+jmp -518
+jmp +1
+acc +30
+acc +21
+jmp -202
+nop -18
+jmp -344
+jmp -88
+nop -472
+acc -5
+acc +13
+jmp -295
+nop -315
+acc +41
+nop -317
+jmp -299
+nop +105
+jmp -86
+acc +7
+jmp -226
+nop -277
+acc +21
+acc +13
+acc +47
+jmp -283
+acc -11
+acc -1
+jmp -408
+acc +47
+nop -553
+acc +37
+acc -11
+jmp -468
+acc +43
+nop -299
+acc +40
+acc +2
+jmp -275
+acc +24
+acc -14
+acc +13
+acc +36
+jmp -249
+acc +35
+jmp -45
+acc +47
+acc +31
+acc -19
+jmp -151
+jmp -33
+acc +6
+jmp -160
+jmp -553
+acc +25
+jmp +1
+nop -267
+jmp -430
+acc +23
+nop +63
+acc +37
+jmp -434
+nop -579
+jmp +11
+acc +25
+acc -17
+acc +22
+acc +27
+jmp +15
+jmp -546
+acc -4
+acc +41
+acc +0
+jmp -261
+acc +20
+jmp -404
+jmp -408
+acc +26
+jmp -464
+acc +34
+nop -80
+acc -12
+jmp -43
+jmp -410
+acc -13
+acc -3
+jmp -310
+nop -433
+acc -7
+acc -11
+acc +9
+jmp -29
+nop -564
+acc -5
+acc -16
+acc +36
+jmp -587
+jmp -115
+acc +24
+acc +35
+nop -638
+jmp -573
+acc +31
+acc +14
+jmp -609
+acc +25
+acc -10
+acc +18
+jmp -308
+acc +25
+acc +33
+acc +21
+acc -12
+jmp -172
+nop -37
+acc +12
+jmp -316
+acc +41
+acc +14
+jmp -415
+acc +40
+jmp -112
+jmp -613
+acc +26
+nop -151
+jmp -471
+acc +50
+acc +16
+nop -119
+acc +46
+jmp +1

2020/d08/ex2/ex2.py

@@ -0,0 +1,62 @@
+#!/usr/bin/env python
+
+
+import sys
+from copy import deepcopy
+from typing import List, Tuple
+
+
+def run(code: List[Tuple[str, int]]) -> Tuple[int, bool]:
+    accumulator = 0
+    rip = 0
+
+    def acc(val: int) -> None:
+        nonlocal accumulator
+        nonlocal rip
+        accumulator += val
+        rip += 1
+
+    def nop(val: int) -> None:
+        nonlocal rip
+        rip += 1
+
+    def jmp(val: int) -> None:
+        nonlocal rip
+        rip += val
+
+    instrs = {
+        "acc": acc,
+        "jmp": jmp,
+        "nop": nop,
+    }
+    seen = set()
+
+    while rip not in seen and rip < len(code):
+        seen |= {rip}
+        func = instrs[code[rip][0]]
+        func(code[rip][1])
+
+    return accumulator, rip == len(code)
+
+
+def solve(raw: List[str]) -> int:
+    code = [(line[:3], int(line[3:])) for line in raw]
+    lut = {"jmp": "nop", "nop": "jmp"}
+    for i in range(len(code)):
+        if code[i][0] not in lut:
+            continue
+        new_code = deepcopy(code)
+        new_code[i] = lut[new_code[i][0]], new_code[i][1]
+        val, halted = run(new_code)
+        if halted:
+            return val
+    assert False  # Sanity check
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d08/ex2/input

@@ -0,0 +1,675 @@
+acc -8
+jmp +5
+acc +0
+acc +44
+acc +42
+jmp +324
+acc -17
+jmp +1
+acc -17
+jmp +51
+acc -13
+acc +4
+jmp +1
+nop +608
+jmp +274
+acc -17
+jmp +169
+acc +28
+nop +508
+jmp +1
+jmp +570
+acc +22
+acc -14
+jmp +377
+acc -13
+acc +27
+jmp +474
+acc -5
+jmp +1
+acc +12
+jmp +37
+jmp +184
+acc +36
+acc +32
+acc -8
+jmp +465
+acc -13
+acc +18
+jmp +169
+acc +20
+acc +26
+acc +23
+jmp +333
+jmp +584
+acc +9
+acc +28
+acc +28
+nop +571
+jmp +143
+acc +39
+acc +39
+acc -16
+jmp +361
+acc +48
+acc +3
+acc +15
+nop +4
+jmp +504
+acc +6
+jmp +285
+acc +26
+acc +33
+jmp +1
+acc +36
+jmp +577
+acc +36
+jmp +6
+nop +498
+acc +42
+jmp +496
+acc +10
+jmp +74
+acc +17
+acc +16
+acc +30
+jmp +254
+acc -3
+acc +16
+acc -2
+nop +106
+jmp +541
+acc -15
+jmp +579
+jmp +165
+acc +22
+acc -6
+acc +29
+acc -19
+jmp +342
+acc -19
+jmp +340
+acc +13
+acc +25
+acc +29
+jmp +269
+acc -14
+acc +27
+acc +41
+acc +49
+jmp +181
+nop +350
+jmp +1
+nop +437
+acc +34
+jmp +494
+acc +19
+acc +2
+acc +44
+jmp +558
+acc +10
+jmp +44
+nop +4
+nop -80
+nop +540
+jmp +16
+acc +28
+jmp +14
+acc +13
+nop +399
+acc +29
+nop -60
+jmp -6
+acc +41
+acc +30
+jmp +232
+acc +28
+nop +495
+acc +15
+acc +48
+jmp +157
+nop +483
+jmp -59
+acc +5
+acc +30
+acc +30
+acc +2
+jmp +349
+acc +11
+acc +27
+acc +1
+jmp +367
+acc +8
+acc +45
+acc +11
+jmp +171
+jmp -113
+acc +48
+jmp -38
+acc +12
+jmp +145
+acc +8
+nop +29
+nop +319
+jmp +154
+nop +166
+jmp +395
+nop +15
+jmp +237
+acc +22
+acc +3
+acc +42
+acc +1
+jmp +288
+jmp -63
+nop +489
+acc +33
+jmp +247
+jmp +1
+acc -8
+acc +9
+jmp +413
+acc -17
+acc +3
+acc +3
+jmp +432
+nop -17
+acc +36
+nop +198
+acc +45
+jmp +109
+nop +242
+acc +40
+acc +11
+jmp +448
+jmp +437
+acc +3
+acc +49
+acc +27
+jmp +221
+nop +158
+jmp +143
+acc +50
+jmp -70
+acc +46
+acc +8
+acc +35
+acc -3
+jmp +104
+acc +11
+acc +0
+jmp +34
+nop +132
+jmp +425
+jmp +219
+acc -12
+acc +48
+jmp +21
+jmp +434
+acc +30
+acc +1
+acc +40
+jmp +435
+jmp +132
+acc +40
+jmp +236
+jmp +179
+jmp -149
+acc +25
+acc +40
+acc -9
+acc +49
+jmp +445
+nop +399
+acc -14
+nop +374
+acc +0
+jmp +152
+acc +39
+nop +322
+acc +49
+nop +117
+jmp -19
+acc +24
+jmp +385
+acc +17
+acc +39
+acc +44
+acc -8
+jmp -58
+acc -18
+nop -76
+jmp +66
+acc +14
+jmp +427
+acc +11
+acc +47
+acc +9
+jmp +1
+acc +42
+jmp -7
+acc -16
+acc -13
+jmp +409
+acc +1
+acc +35
+acc +34
+jmp +371
+acc +24
+acc +46
+acc -4
+jmp +367
+acc +19
+acc +27
+acc -8
+acc +41
+jmp -184
+nop -185
+acc +23
+acc -8
+acc +35
+jmp -9
+acc -7
+nop -101
+nop +121
+acc +37
+jmp -72
+acc +24
+jmp +1
+nop -124
+jmp +163
+acc +37
+acc -12
+jmp +331
+acc -12
+acc +1
+jmp +232
+jmp -233
+jmp -72
+acc +28
+jmp +169
+acc +43
+acc +18
+nop +108
+jmp -184
+acc -4
+acc -10
+nop +317
+acc +48
+jmp +173
+nop +45
+jmp -73
+acc +35
+jmp +198
+acc -15
+acc +46
+acc +31
+jmp +41
+nop +169
+jmp +1
+nop -92
+nop -271
+jmp -113
+jmp +1
+nop -42
+jmp +42
+nop -283
+acc +22
+nop +200
+jmp -17
+jmp +1
+acc +49
+nop +35
+nop -185
+jmp +298
+acc +1
+jmp +1
+nop +301
+acc +19
+jmp -34
+jmp +163
+jmp +1
+acc +49
+jmp -115
+jmp -62
+acc +8
+acc +5
+acc -6
+jmp -146
+acc -4
+nop -202
+acc +47
+jmp -114
+acc +8
+jmp +57
+acc +37
+jmp +61
+jmp +267
+acc +2
+acc +28
+nop -20
+jmp -186
+acc +24
+nop +269
+acc +48
+acc +45
+jmp -22
+acc +11
+acc +36
+jmp -267
+acc +7
+nop -45
+nop -231
+jmp +32
+nop +220
+acc +19
+jmp -250
+acc +33
+jmp -169
+acc +45
+acc -13
+acc +0
+acc +44
+jmp +6
+acc +42
+jmp +84
+acc +48
+jmp -332
+jmp +213
+acc -16
+acc +31
+acc +17
+acc +3
+jmp -75
+jmp +1
+acc +11
+acc +4
+jmp -271
+acc -12
+nop +97
+nop +11
+jmp -43
+acc +30
+jmp +1
+jmp +49
+jmp -379
+nop -51
+acc +0
+acc -8
+nop -191
+jmp -346
+jmp -255
+acc +2
+acc +21
+acc -16
+nop +217
+jmp -30
+acc +31
+jmp -270
+jmp -324
+jmp +130
+acc +49
+nop +179
+jmp -37
+acc +11
+acc +15
+acc +29
+acc +17
+jmp -237
+acc +47
+acc -13
+acc +6
+jmp +169
+nop +54
+acc -12
+jmp -233
+nop +33
+acc +17
+acc +14
+acc +21
+jmp -275
+acc -8
+acc +1
+nop +229
+jmp +1
+jmp +119
+jmp -193
+nop +217
+jmp +95
+acc -2
+acc +1
+acc +41
+jmp -332
+acc +44
+nop -343
+acc +23
+jmp -165
+acc +7
+acc -12
+nop -339
+jmp +9
+nop -390
+acc -17
+acc +43
+jmp -138
+nop -247
+acc +42
+acc +0
+jmp +170
+acc +48
+jmp -139
+acc +6
+acc +13
+acc +35
+jmp -85
+nop -117
+jmp -307
+acc +25
+acc -10
+acc -14
+acc +0
+jmp -355
+jmp +102
+acc -8
+acc +47
+acc +36
+jmp +42
+acc +33
+acc +17
+acc +46
+jmp -331
+jmp +1
+acc -11
+jmp +1
+acc +27
+jmp +147
+acc -14
+nop -28
+acc +32
+jmp -482
+acc +11
+nop -390
+jmp -485
+acc -12
+acc +37
+acc +33
+acc +28
+jmp -32
+acc +42
+acc -11
+jmp -460
+acc +36
+acc +6
+acc +39
+jmp +80
+nop +123
+acc -13
+jmp -97
+acc +25
+acc +46
+acc +13
+nop -450
+jmp +84
+acc +3
+nop -260
+jmp +1
+acc +22
+jmp -510
+acc -4
+acc +17
+acc -19
+jmp -420
+acc -14
+acc +26
+acc +29
+acc +17
+jmp -458
+acc -10
+acc +23
+nop -2
+jmp -196
+acc -5
+jmp -416
+acc +49
+jmp -165
+acc +4
+acc +7
+acc +20
+nop -217
+jmp +103
+jmp +5
+acc -1
+acc +2
+jmp +1
+jmp +84
+acc -14
+jmp -518
+jmp +1
+acc +30
+acc +21
+jmp -202
+nop -18
+jmp -344
+jmp -88
+nop -472
+acc -5
+acc +13
+jmp -295
+nop -315
+acc +41
+nop -317
+jmp -299
+nop +105
+jmp -86
+acc +7
+jmp -226
+nop -277
+acc +21
+acc +13
+acc +47
+jmp -283
+acc -11
+acc -1
+jmp -408
+acc +47
+nop -553
+acc +37
+acc -11
+jmp -468
+acc +43
+nop -299
+acc +40
+acc +2
+jmp -275
+acc +24
+acc -14
+acc +13
+acc +36
+jmp -249
+acc +35
+jmp -45
+acc +47
+acc +31
+acc -19
+jmp -151
+jmp -33
+acc +6
+jmp -160
+jmp -553
+acc +25
+jmp +1
+nop -267
+jmp -430
+acc +23
+nop +63
+acc +37
+jmp -434
+nop -579
+jmp +11
+acc +25
+acc -17
+acc +22
+acc +27
+jmp +15
+jmp -546
+acc -4
+acc +41
+acc +0
+jmp -261
+acc +20
+jmp -404
+jmp -408
+acc +26
+jmp -464
+acc +34
+nop -80
+acc -12
+jmp -43
+jmp -410
+acc -13
+acc -3
+jmp -310
+nop -433
+acc -7
+acc -11
+acc +9
+jmp -29
+nop -564
+acc -5
+acc -16
+acc +36
+jmp -587
+jmp -115
+acc +24
+acc +35
+nop -638
+jmp -573
+acc +31
+acc +14
+jmp -609
+acc +25
+acc -10
+acc +18
+jmp -308
+acc +25
+acc +33
+acc +21
+acc -12
+jmp -172
+nop -37
+acc +12
+jmp -316
+acc +41
+acc +14
+jmp -415
+acc +40
+jmp -112
+jmp -613
+acc +26
+nop -151
+jmp -471
+acc +50
+acc +16
+nop -119
+acc +46
+jmp +1

2020/d09/ex1/ex1.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+
+
+import itertools
+import sys
+from typing import List
+
+
+def find_invalid(nums: List[int]) -> int:
+    for i in range(25, len(nums)):
+        num = nums[i]
+        found = False
+        for lhs, rhs in itertools.combinations(nums[i - 25 : i], 2):
+            if lhs + rhs == num:
+                found = True
+                break
+        if not found:
+            return num
+    assert False  # Sanity check
+
+
+def solve(raw: List[str]) -> int:
+    return find_invalid([int(line) for line in raw])
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d09/ex2/ex2.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python
+
+
+import itertools
+import sys
+from typing import List
+
+
+def find_invalid(nums: List[int]) -> int:
+    for i in range(25, len(nums)):
+        num = nums[i]
+        found = False
+        for lhs, rhs in itertools.combinations(nums[i - 25 : i], 2):
+            if lhs + rhs == num:
+                found = True
+                break
+        if not found:
+            return num
+    assert False  # Sanity check
+
+
+def find_weakness(nums: List[int], invalid: int) -> int:
+    for i in range(len(nums) - 2):
+        for j in range(i + 2, len(nums)):
+            if sum(nums[i:j]) == invalid:
+                return min(nums[i:j]) + max(nums[i:j])
+    assert False  # Sanity check((
+
+
+def solve(raw: List[str]) -> int:
+    nums = [int(line) for line in raw]
+    invalid = find_invalid(nums)
+    return find_weakness(nums, invalid)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d10/ex1/ex1.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python
+
+import sys
+from collections import defaultdict
+from typing import Dict, List
+
+
+def make_chain(adapters: List[int]) -> int:
+    adapters = sorted(adapters)
+    output = 0
+    device = adapters[-1] + 3
+    jolts: Dict[int, int] = defaultdict(int)
+    for adapter in adapters:
+        delt = adapter - output
+        jolts[delt] += 1
+        output = adapter
+    jolts[device - output] += 1
+
+    return jolts[1] * jolts[3]
+
+
+def solve(raw: List[str]) -> int:
+    return make_chain([int(line) for line in raw])
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d10/ex1/input

@@ -0,0 +1,101 @@
+144
+10
+75
+3
+36
+80
+143
+59
+111
+133
+1
+112
+23
+62
+101
+137
+41
+24
+8
+121
+35
+105
+161
+69
+52
+21
+55
+29
+135
+142
+38
+108
+141
+115
+68
+7
+98
+82
+9
+72
+118
+27
+153
+140
+61
+90
+158
+102
+28
+134
+91
+2
+17
+81
+31
+15
+120
+20
+34
+56
+4
+44
+74
+14
+147
+11
+49
+128
+16
+99
+66
+47
+125
+155
+130
+37
+67
+54
+60
+48
+136
+89
+119
+154
+122
+129
+163
+73
+100
+85
+95
+30
+76
+162
+22
+79
+88
+150
+53
+63
+92

2020/d10/ex2/ex2.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+
+import sys
+from typing import Dict, List
+
+
+def make_chain(adapters: List[int]) -> int:
+    adapters += [0, max(adapters) + 3]
+    adapters = sorted(adapters)
+    jolts: Dict[int, int] = {}
+    N = len(adapters)
+
+    def rec(index: int) -> int:
+        if (res := jolts.get(index)) is not None:
+            return res
+        if index == N - 1:
+            return 1
+        total = sum(
+            rec(i)
+            for i in range(index + 1, min(N, index + 4))
+            if (adapters[i] - adapters[index]) <= 3
+        )
+        jolts[index] = total
+        return total
+
+    return rec(0)
+
+
+def solve(raw: List[str]) -> int:
+    return make_chain([int(line) for line in raw])
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d10/ex2/input

@@ -0,0 +1,101 @@
+144
+10
+75
+3
+36
+80
+143
+59
+111
+133
+1
+112
+23
+62
+101
+137
+41
+24
+8
+121
+35
+105
+161
+69
+52
+21
+55
+29
+135
+142
+38
+108
+141
+115
+68
+7
+98
+82
+9
+72
+118
+27
+153
+140
+61
+90
+158
+102
+28
+134
+91
+2
+17
+81
+31
+15
+120
+20
+34
+56
+4
+44
+74
+14
+147
+11
+49
+128
+16
+99
+66
+47
+125
+155
+130
+37
+67
+54
+60
+48
+136
+89
+119
+154
+122
+129
+163
+73
+100
+85
+95
+30
+76
+162
+22
+79
+88
+150
+53
+63
+92

2020/d11/ex1/ex1.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+
+import itertools
+import sys
+from copy import deepcopy
+from typing import Iterator, List, Tuple
+
+Grid = List[List[str]]
+
+
+def update(grid: Grid) -> Grid:
+    def neightbours(x: int, y: int) -> Iterator[Tuple[int, int]]:
+        for dx, dy in itertools.product(range(-1, 2), range(-1, 2)):
+            if dx == 0 and dy == 0:
+                continue
+
+            new_x, new_y = x + dx, y + dy
+            if 0 <= new_x < len(grid) and 0 <= new_y < len(grid[0]):
+                yield new_x, new_y
+
+    new_grid = deepcopy(grid)
+
+    for x, y in itertools.product(range(len(grid)), range(len(grid[0]))):
+        num_alive = sum(grid[nx][ny] == "#" for nx, ny in neightbours(x, y))
+        if num_alive == 0 and grid[x][y] == "L":
+            new_grid[x][y] = "#"
+        elif num_alive >= 4 and grid[x][y] == "#":
+            new_grid[x][y] = "L"
+
+    return new_grid
+
+
+def solve(grid: Grid) -> int:
+    while (new_grid := update(grid)) != grid:
+        grid = new_grid
+    return sum(sum(pos == "#" for pos in line) for line in grid)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve([[line[i] for i in range(len(line))] for line in input]))
+
+
+if __name__ == "__main__":
+    main()

2020/d11/ex1/input

@@ -0,0 +1,91 @@
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2020/d11/ex2/ex2.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+
+import itertools
+import sys
+from copy import deepcopy
+from typing import Iterator, List, Tuple
+
+Grid = List[List[str]]
+
+
+def update(grid: Grid) -> Grid:
+    def neightbours(x: int, y: int) -> Iterator[Tuple[int, int]]:
+        for dx, dy in itertools.product(range(-1, 2), range(-1, 2)):
+            if dx == 0 and dy == 0:
+                continue
+
+            new_x, new_y = x + dx, y + dy
+            while 0 <= new_x < len(grid) and 0 <= new_y < len(grid[0]):
+                if grid[new_x][new_y] in "L#":
+                    yield new_x, new_y
+                    break
+                new_x, new_y = new_x + dx, new_y + dy
+
+    new_grid = deepcopy(grid)
+
+    for x, y in itertools.product(range(len(grid)), range(len(grid[0]))):
+        num_alive = sum(grid[nx][ny] == "#" for nx, ny in neightbours(x, y))
+        if num_alive == 0 and grid[x][y] == "L":
+            new_grid[x][y] = "#"
+        elif num_alive >= 5 and grid[x][y] == "#":
+            new_grid[x][y] = "L"
+
+    return new_grid
+
+
+def solve(grid: Grid) -> int:
+    while (new_grid := update(grid)) != grid:
+        grid = new_grid
+    return sum(sum(pos == "#" for pos in line) for line in grid)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve([[line[i] for i in range(len(line))] for line in input]))
+
+
+if __name__ == "__main__":
+    main()

2020/d11/ex2/input

@@ -0,0 +1,91 @@
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2020/d12/ex1/ex1.py

@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+
+import sys
+from typing import List, Tuple
+
+Positiom = Tuple[str, int, int]
+Instruction = Tuple[str, int]
+
+ORIENTATIONS = ["N", "W", "S", "E"]
+MOVES = {
+    "N": (1, 0),
+    "W": (0, -1),
+    "S": (-1, 0),
+    "E": (0, 1),
+}
+
+
+def move_ship(pos: Positiom, instr: Instruction) -> Positiom:
+    if instr[0] == "L":
+        assert instr[1] % 90 == 0  # Sanity check
+        delt = instr[1] // 90
+        orientation = ORIENTATIONS[
+            (ORIENTATIONS.index(pos[0]) + delt) % len(ORIENTATIONS)
+        ]
+        return (orientation, *pos[1:])
+    elif instr[0] == "R":
+        assert instr[1] % 90 == 0  # Sanity check
+        delt = instr[1] // 90
+        orientation = ORIENTATIONS[ORIENTATIONS.index(pos[0]) - delt]
+        return (orientation, *pos[1:])
+    else:
+        dx, dy = MOVES[pos[0] if instr[0] == "F" else instr[0]]
+        x, y = pos[1], pos[2]
+        x += dx * instr[1]
+        y += dy * instr[1]
+        return (pos[0], x, y)
+
+
+def solve(raw: List[str]) -> int:
+    instructions = [(i[0], int(i[1:])) for i in raw]
+    ship = ("E", 0, 0)
+    for i in instructions:
+        ship = move_ship(ship, i)
+    return abs(ship[1]) + abs(ship[2])
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d12/ex1/input

@@ -0,0 +1,785 @@
+N2
+F85
+L90
+W5
+R90
+F56
+F16
+F98
+W4
+S3
+F92
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+F80

2020/d12/ex2/ex2.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env python
+
+import sys
+from dataclasses import dataclass
+from typing import List, Tuple
+
+Instruction = Tuple[str, int]
+Position = Tuple[int, int]
+
+
+@dataclass
+class Ship:
+    pos: Position
+    rel_waypoint: Position
+
+
+ORIENTATIONS = ["N", "W", "S", "E"]
+MOVES = {
+    "N": (1, 0),
+    "W": (0, -1),
+    "S": (-1, 0),
+    "E": (0, 1),
+}
+
+
+def move_ship(pos: Ship, instr: Instruction) -> Ship:
+    if instr[0] == "L":
+        assert instr[1] % 90 == 0
+        turns = instr[1] // 90
+        x, y = pos.rel_waypoint
+        for __ in range(turns):
+            x, y = y, -x
+        return Ship(pos.pos, (x, y))
+    elif instr[0] == "R":
+        assert instr[1] % 90 == 0
+        turns = instr[1] // 90
+        x, y = pos.rel_waypoint
+        for __ in range(turns):
+            x, y = -y, x
+        return Ship(pos.pos, (x, y))
+    elif instr[0] == "F":
+        dx, dy = pos.rel_waypoint
+        x, y = pos.pos
+        x += dx * instr[1]
+        y += dy * instr[1]
+        return Ship((x, y), pos.rel_waypoint)
+    else:
+        dx, dy = MOVES[instr[0]]
+        x, y = pos.rel_waypoint
+        x += dx * instr[1]
+        y += dy * instr[1]
+        return Ship(pos.pos, (x, y))
+
+
+def solve(raw: List[str]) -> int:
+    instructions = [(i[0], int(i[1:])) for i in raw]
+    ship = Ship((0, 0), (1, 10))
+    for i in instructions:
+        ship = move_ship(ship, i)
+    return sum(abs(c) for c in ship.pos)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d12/ex2/input

@@ -0,0 +1,785 @@
+N2
+F85
+L90
+W5
+R90
+F56
+F16
+F98
+W4
+S3
+F92
+N3
+W2
+N3
+E2
+S4
+W1
+N2
+F7
+N2
+E3
+S1
+L90
+N2
+E2
+F13
+E5
+S4
+R90
+N2
+W4
+F55
+W3
+N1
+F93
+L90
+N3
+F72
+E4
+W1
+N2
+F76
+S5
+L90
+F44
+N2
+F81
+S1
+F28
+R270
+E5
+N4
+E5
+F23
+R270
+F53
+N2
+L90
+E5
+R180
+N1
+F99
+N3
+E2
+R180
+W5
+F70
+W5
+R180
+F9
+S1
+R90
+S1
+F58
+N3
+N4
+R180
+N3
+R90
+S5
+F6
+E3
+N4
+F38
+W4
+R180
+F53
+R180
+E2
+R90
+W4
+L180
+F13
+N3
+F80
+W1
+R270
+E2
+S1
+F24
+E5
+F1
+S3
+F34
+R90
+F54
+E4
+F59
+E4
+R180
+F88
+R90
+S1
+R90
+F6
+R90
+N1
+F89
+W3
+F9
+L180
+W1
+F47
+R180
+N2
+W1
+F28
+F73
+S1
+F27
+E2
+F82
+W3
+F38
+E4
+L90
+E4
+F64
+W5
+W3
+S2
+L180
+F22
+L90
+F10
+L90
+F64
+E4
+N4
+F21
+S4
+E3
+N5
+F71
+N3
+F93
+N2
+R90
+E4
+F64
+E1
+L90
+F37
+E5
+F96
+W2
+N4
+E2
+R90
+S1
+R90
+W1
+R180
+E2
+S2
+R90
+W3
+S2
+F94
+W2
+L180
+S2
+E4
+F54
+N2
+E4
+S3
+L180
+W2
+N1
+W2
+R90
+F54
+L180
+N2
+F87
+E2
+F23
+W3
+R180
+W4
+S3
+F93
+E5
+R90
+N4
+R90
+S4
+E3
+S3
+F31
+R90
+F89
+E3
+F73
+S5
+F97
+W1
+L180
+F52
+E3
+F68
+R90
+S2
+S5
+F26
+L180
+F12
+E2
+F83
+F9
+N2
+R90
+F99
+R90
+S4
+E5
+R90
+S4
+F84
+W4
+E5
+R90
+F42
+W4
+F94
+W1
+R270
+S3
+E5
+F23
+F38
+W2
+W1
+N5
+E2
+L180
+N1
+F26
+L90
+F5
+R90
+N5
+R180
+F25
+L90
+S1
+N3
+F62
+S1
+F77
+N3
+E3
+L90
+F93
+W3
+E3
+N2
+F14
+N5
+F80
+S2
+L90
+N4
+W2
+L180
+F81
+R180
+N4
+F8
+W4
+S4
+R90
+F34
+W2
+L180
+F49
+S4
+E4
+R90
+W2
+F75
+R90
+S5
+E4
+L90
+N3
+W4
+R90
+N4
+E3
+F62
+R90
+E4
+N2
+W3
+N1
+R90
+F75
+E1
+L180
+S3
+W1
+N2
+W5
+N3
+F70
+L90
+W1
+S2
+L270
+E5
+F21
+S3
+W3
+R90
+F3
+N3
+F85
+E5
+R90
+F8
+W2
+S3
+W4
+F38
+N5
+F54
+L90
+W3
+R90
+E5
+F2
+S5
+F79
+N4
+E2
+R180
+W2
+N1
+R90
+F57
+W4
+S1
+F27
+E5
+F31
+R90
+F11
+S5
+W4
+N3
+W1
+S1
+F93
+N3
+L180
+E1
+F63
+E2
+R180
+F99
+N3
+E3
+N3
+W5
+F66
+E5
+R90
+S1
+L90
+N1
+R90
+W5
+R90
+L90
+E4
+R270
+W3
+N5
+R90
+S5
+F8
+F93
+E3
+N4
+F48
+W1
+R180
+N1
+R90
+W3
+R180
+F3
+R180
+F8
+N4
+E1
+F34
+N1
+F33
+N4
+R90
+L180
+E3
+F35
+S5
+F64
+L90
+E4
+F30
+R90
+L90
+E5
+N4
+R180
+S2
+W3
+R90
+F35
+L180
+E2
+S3
+E5
+L90
+N5
+R90
+R90
+N4
+E5
+F34
+W5
+W4
+L90
+E2
+N2
+S5
+F85
+S5
+F98
+W1
+S3
+F7
+E2
+S4
+F27
+L180
+F30
+L90
+W1
+F87
+W1
+E2
+E2
+N3
+F64
+E4
+F31
+L270
+S3
+W2
+F60
+S2
+E1
+L180
+F2
+W3
+S3
+E3
+R180
+F12
+L180
+E1
+R90
+L180
+F60
+R90
+E4
+R180
+E3
+S1
+E3
+S1
+F86
+R90
+E1
+S4
+F47
+N4
+E4
+N4
+W4
+R90
+S3
+F81
+S1
+E1
+L270
+S2
+L90
+E5
+F62
+W4
+F78
+L90
+F18
+S5
+R180
+S1
+R270
+S3
+W5
+F3
+N1
+R90
+N4
+F59
+N1
+W4
+R90
+E3
+N3
+N4
+L90
+W5
+S2
+L90
+N2
+W1
+L180
+F49
+N4
+F14
+L180
+N2
+F43
+S3
+F84
+E3
+R180
+S4
+W1
+F90
+F58
+W3
+F18
+E5
+L90
+F72
+W1
+N1
+R90
+S3
+F79
+E4
+S4
+F31
+N4
+F66
+L90
+W1
+N2
+E4
+F74
+W1
+N2
+E5
+S5
+L90
+E3
+F71
+N3
+R90
+N4
+E2
+N2
+F83
+L90
+W4
+F64
+L90
+W1
+S2
+E4
+F48
+S3
+W5
+L90
+E5
+S1
+L180
+E4
+N4
+F40
+E4
+R270
+F85
+E4
+R90
+L90
+S1
+R270
+W1
+R180
+F72
+S2
+R90
+F63
+R180
+F93
+E4
+S4
+R90
+W3
+R90
+F10
+E4
+F93
+R180
+E1
+E3
+R90
+W1
+L180
+F83
+W4
+F41
+W4
+R90
+F1
+L90
+W4
+L90
+N4
+R180
+S5
+F63
+S2
+E4
+R90
+F90
+E5
+S2
+L90
+F64
+R90
+L90
+N1
+E4
+F20
+W3
+N4
+R90
+W5
+N1
+E5
+W4
+R90
+N1
+F72
+S5
+F78
+S2
+R180
+N4
+L180
+N5
+F22
+W4
+R180
+F19
+W3
+L90
+E4
+F27
+W5
+S4
+E4
+F34
+N4
+F40
+N3
+R90
+L90
+S2
+W1
+R90
+E3
+R90
+N1
+W4
+F93
+N5
+L90
+F7
+E1
+L90
+W4
+N3
+E5
+F62
+R90
+W4
+L90
+S3
+E4
+L270
+S3
+W5
+S2
+F30
+N2
+F70
+S5
+W1
+S3
+R90
+E4
+S5
+L90
+S2
+R90
+W1
+L90
+W5
+F8
+R90
+N4
+L180
+N5
+L90
+N3
+F30
+W2
+F39
+E3
+F17
+W3
+S1
+F48
+E1
+R90
+F35
+W2
+L180
+S1
+L90
+E5
+S1
+R90
+E2
+S5
+W2
+N1
+E3
+F100
+S2
+E4
+L90
+W5
+R90
+F81
+S4
+R90
+F80

2020/d13/ex1/ex1.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python
+
+import itertools
+import math
+import sys
+from typing import List, Tuple
+
+
+def find_first_factor(earliest: int, timings: List[int]) -> Tuple[int, int]:
+    timings = sorted(timings)
+    for t in itertools.count(earliest):
+        for n in timings:
+            if t % n == 0:
+                return t - earliest, n
+
+    assert False  # Make Mypy happy
+
+
+def solve(raw: List[str]) -> int:
+    return math.prod(
+        find_first_factor(int(raw[0]), [int(i) for i in raw[1].split(",") if i != "x"])
+    )
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d13/ex1/input

@@ -0,0 +1,2 @@
+1002462
+37,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,41,x,x,x,x,x,x,x,x,x,601,x,x,x,x,x,x,x,x,x,x,x,19,x,x,x,x,17,x,x,x,x,x,23,x,x,x,x,x,29,x,443,x,x,x,x,x,x,x,x,x,x,x,x,13

2020/d13/ex2/ex2.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python
+
+import math
+import sys
+from typing import Dict, List
+
+
+def run_contest(timings: List[int]) -> int:
+    # https://rosettacode.org/wiki/Chinese_remainder_theorem#Python_3.6
+    def mul_inv(a: int, b: int) -> int:
+        b0 = b
+        x0, x1 = 0, 1
+        if b == 1:
+            return 1
+        while a > 1:
+            q = a // b
+            a, b = b, a % b
+            x0, x1 = x1 - q * x0, x0
+        if x1 < 0:
+            x1 += b0
+        return x1
+
+    def chinese_remainder(residue_mapping: Dict[int, int]) -> int:
+        res = 0
+        prod = math.prod(residue_mapping)
+        for n_i, a_i in residue_mapping.items():
+            p = prod // n_i
+            res += a_i * mul_inv(p, n_i) * p
+        return res % prod
+
+    residues = {t: -i for (i, t) in enumerate(timings) if t > 0}
+    return chinese_remainder(residues)
+
+
+def solve(raw: List[str]) -> int:
+    return run_contest([int(i) if i != "x" else -1 for i in raw[1].split(",")])
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d13/ex2/input

@@ -0,0 +1,2 @@
+1002462
+37,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,x,41,x,x,x,x,x,x,x,x,x,601,x,x,x,x,x,x,x,x,x,x,x,19,x,x,x,x,17,x,x,x,x,x,23,x,x,x,x,x,29,x,443,x,x,x,x,x,x,x,x,x,x,x,x,13

2020/d14/ex1/ex1.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+import re
+import sys
+from dataclasses import dataclass
+from typing import Dict, List
+
+
+@dataclass
+class Mask:
+    ones: int
+    zeros: int
+
+
+Memory = Dict[int, int]
+
+
+def solve(raw: List[str]) -> int:
+    mask = Mask(
+        0,
+        (2 << 36) - 1,
+    )
+    mem_pattern = re.compile("mem\\[([0-9]+)\\] = ([0-9]+)")
+    mask_pattern = re.compile("mask = ([01X]+)")
+    mem: Memory = {}
+    for instr in raw:
+        if (mem_match := mem_pattern.match(instr)) is not None:
+            addr, val = int(mem_match.group(1)), int(mem_match.group(2))
+            val |= mask.ones
+            val &= mask.zeros
+            mem[addr] = val
+        elif (mask_match := mask_pattern.match(instr)) is not None:
+            ones = int(mask_match.group(1).replace("X", "0"), 2)
+            zeros = int(mask_match.group(1).replace("X", "1"), 2)
+            mask = Mask(ones, zeros)
+    return sum(mem.values())
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d14/ex1/input

@@ -0,0 +1,575 @@
+mask = 110100X1X01011X01X0X000111X00XX1010X
+mem[29267] = 4155
+mem[6177] = 494929
+mem[47500] = 15063410
+mask = 11110X000010XX10X11X00X11010X0X00101
+mem[10164] = 73599
+mem[61707] = 15191
+mem[53825] = 69618638
+mem[15953] = 10067309
+mem[39889] = 10761258
+mask = 11XXX0XX001X01101111X001000X01X10000
+mem[6917] = 2088
+mem[10383] = 52991144
+mem[14304] = 84876
+mem[6464] = 14167
+mask = X11X0X00001010101XX101100X011X000XX1
+mem[58256] = 51753803
+mem[2919] = 21619
+mask = 111100X00010101011X1XXXXX01X000001X1
+mem[13063] = 6587
+mem[28673] = 3893
+mem[53317] = 236744
+mem[64240] = 29367045
+mask = XX11101X0011X01X1111X001X1X000101110
+mem[59497] = 6945823
+mem[44552] = 193130494
+mem[15034] = 10641
+mem[25467] = 17061678
+mask = X11110X11X11X000110110010110011X0001
+mem[22485] = 90244
+mem[38996] = 221133
+mem[15034] = 12927587
+mem[4425] = 31960477
+mem[18544] = 51522085
+mask = 111100100010X0101XX1110100000XXX0001
+mem[53765] = 1528530
+mem[18576] = 68702
+mem[6484] = 170802
+mem[62813] = 857
+mask = 1X1101010X1X111X110101X1010100010010
+mem[34688] = 36117345
+mem[12832] = 14851833
+mem[12097] = 43
+mem[63931] = 875829
+mask = 10XXX01100101010X1X111010000101101X1
+mem[33582] = 28611764
+mem[53969] = 2641
+mem[53107] = 99965
+mem[40648] = 1834153
+mem[55768] = 974
+mem[52274] = 7634
+mask = 111010X10010111X1111X0XXX00110110001
+mem[43784] = 12232
+mem[23109] = 11403
+mem[18521] = 145694
+mem[12479] = 621
+mask = XX000011001000101111XX101X1X10101X11
+mem[22233] = 30348
+mem[7554] = 346199
+mem[1904] = 12735
+mem[23360] = 73797
+mem[22803] = 62630115
+mask = 1110X0X0X010X01011X10110001X00XX0110
+mem[17347] = 310008019
+mem[39889] = 8179468
+mem[57304] = 861379
+mem[2513] = 10343
+mask = 1111X00100101X1X110101111111010000XX
+mem[49939] = 39353857
+mem[48794] = 4266
+mem[16061] = 2768
+mem[7728] = 103608
+mem[17473] = 8980
+mask = 1001XXX10X0X11X0010100001100X0110101
+mem[21497] = 412878
+mem[49939] = 429971
+mem[3405] = 20518
+mem[6160] = 51622
+mem[43784] = 179922643
+mask = 101100X1001X10XX1101X00XX0101000100X
+mem[52378] = 1530
+mem[11326] = 121760772
+mem[58232] = 164870285
+mem[21604] = 17658898
+mem[56257] = 373
+mem[37783] = 7760640
+mem[3927] = 427054839
+mask = 1111XXX10010X11X110101011X10XX10000X
+mem[18153] = 234818
+mem[56755] = 531
+mem[50940] = 4428
+mem[14849] = 2185318
+mask = 10110001X0101010X101010X10000X110001
+mem[53880] = 33275
+mem[61621] = 40021
+mem[10319] = 9468
+mem[34607] = 1186
+mem[43043] = 51628146
+mem[14912] = 2626679
+mem[4627] = 377
+mask = 111X0X00XXX01110011X10001X1110010101
+mem[39892] = 6297
+mem[13182] = 4721
+mem[41736] = 497649
+mem[40923] = 905
+mask = 1X1X00110010011X1110X0001X10011XXX00
+mem[27118] = 898
+mem[59800] = 499005720
+mask = 11X00101001011100X01X01XX100XX010110
+mem[56505] = 23945612
+mem[13987] = 14200131
+mem[30557] = 10396
+mask = 1110000100X1X01X011111X001101011010X
+mem[22942] = 642242
+mem[43083] = 787
+mem[55307] = 818610470
+mem[13145] = 35815
+mask = 00101X01001010X011111101X1001X010101
+mem[34] = 928
+mem[45041] = 12613
+mem[20825] = 18260
+mem[33068] = 34949
+mem[51299] = 1228577
+mask = X11X0001101X001X11010001110X00X01X11
+mem[5587] = 3120
+mem[49934] = 166656215
+mem[12068] = 15929077
+mem[51471] = 225039
+mem[35781] = 703735
+mem[2227] = 788305092
+mem[30564] = 4758296
+mask = 1111X1X000100X10X10010011XX011010110
+mem[44917] = 195410918
+mem[33352] = 480672
+mem[18755] = 6376
+mask = X1X1010000100010XXX0XXX011X011010000
+mem[48717] = 6124
+mem[6213] = 13466626
+mem[33804] = 41450
+mem[42319] = 1001042
+mem[32039] = 22800
+mem[37805] = 3719
+mem[21650] = 5310058
+mask = 1X110X0X00101X10110100111X10000X00X1
+mem[64021] = 527213
+mem[54049] = 2076239
+mem[23361] = 10197597
+mem[29280] = 28451017
+mem[3136] = 46819
+mem[21711] = 62402971
+mask = 1X01000100X01110X101000101000XX10X01
+mem[20911] = 1251
+mem[3136] = 84
+mem[27425] = 174128253
+mem[20825] = 20910
+mem[36929] = 13761934
+mem[44528] = 983
+mask = 1111X000001X001X11111XX1X00X0110000X
+mem[516] = 6216446
+mem[33582] = 140720
+mem[11248] = 208955105
+mem[42641] = 4364
+mask = 101X1X10101X10001XXX0001111100011X11
+mem[38531] = 39598
+mem[46500] = 52608117
+mem[43473] = 96876
+mem[14304] = 59167889
+mem[53240] = 15525
+mask = X001100X00X01110111X1101010X00101111
+mem[14918] = 2357
+mem[6160] = 1208519
+mem[34729] = 1611506
+mem[51158] = 2346
+mask = 111X00100000101011010111001110XXX1X0
+mem[28673] = 331536
+mem[43917] = 324
+mem[45633] = 398602
+mem[49398] = 1861
+mem[1376] = 625904
+mask = 01101X00001010100101100X101X10X00011
+mem[28094] = 8805622
+mem[30532] = 3723
+mem[4708] = 14406
+mem[9094] = 50623
+mem[61707] = 73798
+mem[4885] = 224
+mask = 11X1000X001011X011010X01010XX10X0001
+mem[7236] = 865782
+mem[15953] = 487381549
+mask = XX1011000010X11X010X11111100X11100XX
+mem[18078] = 16242735
+mem[5995] = 18850
+mem[9604] = 839527
+mem[47055] = 216488
+mem[4059] = 554189
+mem[12823] = 346
+mask = 111100010010111X1X01X1110001X001X000
+mem[936] = 6429561
+mem[40513] = 1695095
+mem[60924] = 252
+mem[55142] = 557439
+mask = 10111010X010X0X01XX1100111010X1X1X00
+mem[38842] = 738
+mem[30409] = 10094059
+mem[303] = 98943
+mem[8017] = 251227
+mask = X1X0X00100100010X101001100110001X100
+mem[57304] = 1975648
+mem[56257] = 1580
+mem[45571] = 14800
+mask = 0XX00011001000X0X1111X11101X101X1000
+mem[43189] = 4422
+mem[40391] = 167654070
+mask = 1110X01100100X10111XX01X1000XX01100X
+mem[33804] = 1018
+mem[29496] = 93900747
+mem[9245] = 138506
+mem[62151] = 674748
+mem[4762] = 434956
+mem[37596] = 103373
+mem[27932] = 5730935
+mask = 0111X0000010101X111X01001010101110X0
+mem[36174] = 5162986
+mem[33114] = 3116668
+mem[64325] = 3171
+mem[6917] = 5566099
+mem[30076] = 176956
+mem[14847] = 60238674
+mask = 1110100X00100010XXX1X110000000001X01
+mem[2546] = 7549354
+mem[22803] = 386154
+mem[28386] = 86719
+mask = 11110100X00011X011X10X0011011010X100
+mem[52611] = 131
+mem[47628] = 266
+mem[22198] = 764
+mem[4444] = 406
+mem[20006] = 3520555
+mask = 10111X101010X000100110011100X01X1010
+mem[15300] = 345854040
+mem[49359] = 38235897
+mem[38614] = 54370972
+mem[18472] = 94915
+mem[36746] = 697
+mask = 11111011X011101X111X10100100000X0111
+mem[29295] = 943139945
+mem[9245] = 1505677
+mem[14391] = 3398
+mask = 1001X1X1X1001X10010100001X01XX11X101
+mem[14613] = 15025
+mem[58121] = 1912
+mem[300] = 37310097
+mask = X011001X001010XX11X1100X00XXX0011110
+mem[17438] = 69372377
+mem[39932] = 850
+mem[53370] = 7579742
+mem[49975] = 2831104
+mem[37777] = 2859
+mem[49238] = 508
+mem[57733] = 3881
+mask = 11110010001010X011X1X1X11XX00XX101X0
+mem[29112] = 64162
+mem[9687] = 10115647
+mem[8456] = 404111433
+mem[23461] = 21916957
+mem[49272] = 29938
+mem[20911] = 3016
+mem[45508] = 27114
+mask = X11010X000101X10X1X10X1XXX0110000111
+mem[17094] = 1379888
+mem[19615] = 633
+mem[43148] = 125580
+mem[12097] = 33116239
+mem[34723] = 9358
+mask = X111X010010X101011110X00011111000101
+mem[63053] = 691425156
+mem[24475] = 286162
+mem[54863] = 76914
+mem[58008] = 1422
+mem[24141] = 657
+mem[34729] = 49841
+mask = 1110XXXXX0X011100X0101X1010X10001100
+mem[14613] = 4510
+mem[47926] = 39745
+mem[8475] = 327407289
+mem[22599] = 699202
+mem[53880] = 822
+mem[56755] = 1267566
+mask = 1X1110X1101X100011X110X01X0001110XX1
+mem[8272] = 301
+mem[65364] = 3792396
+mem[38614] = 591
+mem[10929] = 4608
+mem[30304] = 2186
+mask = 1110000110X0001011010011110000X0X01X
+mem[12247] = 1533938
+mem[24376] = 12421
+mem[16168] = 17660
+mask = 001000000010101X11X101X00001X00XX0X0
+mem[606] = 2029
+mem[55307] = 598939
+mem[26724] = 59403185
+mask = 11X10XX000X01X101X01010110000X00000X
+mem[4022] = 39755
+mem[39281] = 801343
+mem[46388] = 161
+mem[21585] = 11357692
+mem[45828] = 28056
+mask = 11111X11101111001101XX11X1010X00X11X
+mem[47755] = 3034
+mem[42293] = 208825
+mem[29700] = 38238
+mem[22485] = 1319489
+mask = 110100X0001X101X11010011100X000X0101
+mem[3549] = 18335450
+mem[58890] = 2676627
+mem[58022] = 17558
+mem[54581] = 2533100
+mem[10929] = 280423870
+mem[63555] = 2319
+mem[2546] = 926
+mask = 1110X011001XXX101111X1110001X110X001
+mem[23536] = 4353
+mem[59601] = 798347
+mem[20671] = 389086
+mask = 111100X000101010110101001XX1XX11X110
+mem[1922] = 27551122
+mem[19645] = 370473454
+mem[32150] = 214932
+mem[22144] = 2339
+mask = 111000100110X01X1101101XX01111010X00
+mem[35424] = 110774
+mem[57733] = 531999
+mem[45139] = 30278097
+mem[21648] = 16240
+mask = 1010X00100X00010111101001X0X00X10010
+mem[58367] = 71950736
+mem[855] = 21617593
+mem[27425] = 1287663
+mem[45595] = 1472271
+mem[37043] = 1635315
+mask = 111X00X1001X110011010010X0001100000X
+mem[7355] = 208029905
+mem[52551] = 6755
+mem[49542] = 11911
+mem[44588] = 377151
+mem[64240] = 61021
+mem[8017] = 3572
+mask = 0X101000001011X011X101X0000X0000X011
+mem[47482] = 1568110
+mem[28053] = 707
+mem[60195] = 1645
+mask = 11110000001X101011X1101010110X00011X
+mem[27869] = 17384703
+mem[17643] = 2734129
+mem[12802] = 3774302
+mem[64154] = 916
+mask = X111X00X0010110011010X01111001010XX1
+mem[64313] = 102372
+mem[1522] = 15753175
+mem[40584] = 728098
+mem[4315] = 227246865
+mem[55272] = 7469
+mem[15889] = 7541958
+mem[2464] = 371279
+mask = XX01X011X01011101101X00XX10X00110100
+mem[5157] = 275
+mem[12864] = 4756
+mem[31054] = 1960
+mem[52498] = 2797835
+mem[62151] = 4302055
+mask = 0X1X00X000101X1X1111010X000101X00110
+mem[10919] = 612216
+mem[15357] = 629148
+mem[52500] = 9503
+mem[17094] = 7855156
+mem[6652] = 34492510
+mem[10426] = 726153
+mask = 010X00110010001X1111101XXX01X0X00101
+mem[12974] = 9133
+mem[14108] = 3766
+mem[24429] = 1803969
+mem[55142] = 36626772
+mem[34019] = 473252
+mem[33604] = 206855588
+mask = XX1010X10010X01011X11X0011X01011XX11
+mem[60027] = 841211
+mem[21538] = 91609915
+mem[6123] = 97596
+mem[50346] = 1087
+mem[40221] = 644
+mem[8944] = 551344
+mask = 111000X0001XX0100111111001100X00000X
+mem[35547] = 950205
+mem[3312] = 880
+mem[48780] = 112556701
+mem[4531] = 126242
+mem[39889] = 1541
+mem[24463] = 9010512
+mask = 11XX101X1X101X001X0111X101000X1X0001
+mem[64081] = 140604
+mem[59066] = 420736
+mem[48653] = 54226
+mem[32039] = 128940
+mem[35847] = 5
+mask = 1001XX01X000111011X1X101000X0X0X1011
+mem[58689] = 43170762
+mem[12832] = 298144839
+mem[1474] = 132921
+mem[48057] = 37242
+mem[50871] = 3602555
+mem[56611] = 31214078
+mask = 101X000100X011X01101XX10011X0XX1X011
+mem[7317] = 2861082
+mem[59424] = 214468
+mask = 10X110111011101010110X10111001100XX1
+mem[19313] = 2195784
+mem[38614] = 1263318
+mem[26637] = 54905795
+mem[8165] = 209848
+mem[2919] = 173
+mem[928] = 7285
+mask = 1011101XX011XX1X10111000011010X11111
+mem[55792] = 11794686
+mem[48675] = 377
+mem[6484] = 857
+mem[60951] = 523305753
+mem[40488] = 713
+mem[61858] = 12068
+mask = 1110X1XX0010111X01011111X000X0X1011X
+mem[65124] = 178147455
+mem[15914] = 3503977
+mem[35424] = 232628
+mask = 11X0XXX100100010X1X101001XX100110001
+mem[14344] = 2670
+mem[20825] = 27980258
+mem[2792] = 447228346
+mem[29177] = 822367210
+mem[30651] = 1658444
+mem[14099] = 389
+mask = 110001X1X010X110X101X011X100X1X10110
+mem[54275] = 15249248
+mem[3293] = 9475932
+mem[8835] = 864371828
+mem[45269] = 3632
+mem[19645] = 580157
+mask = 101X101XX01X10X01X1110X0110X1011011X
+mem[40765] = 53494316
+mem[35543] = 11261002
+mem[13933] = 768
+mem[38594] = 464498
+mem[64240] = 22406
+mask = 110100010X10111011X100X1010001X1X1X0
+mem[20911] = 225
+mem[12748] = 621
+mem[29907] = 363502
+mem[14613] = 3957288
+mem[64313] = 389459
+mem[21648] = 2008398
+mask = 111X101X00X0X010X1110110X00011X1X011
+mem[33134] = 1049991943
+mem[25205] = 4126902
+mask = 1X10101001101X1011X100X00X1X1101X100
+mem[18755] = 713
+mem[38650] = 119518
+mem[33804] = 3211485
+mem[14609] = 10752655
+mem[59822] = 234204205
+mask = 1X1XX0111X1X11001101100X110100X0X010
+mem[44041] = 255408886
+mem[62469] = 22090167
+mem[12247] = 1760642
+mask = 1110101000001X101X11010010XX110001XX
+mem[30389] = 29125
+mem[10833] = 1979
+mask = 11111010111X1X001001111X1X1000010001
+mem[20949] = 90971
+mem[16774] = 9470584
+mem[56713] = 73907316
+mem[9264] = 36226
+mem[60287] = 571
+mem[25303] = 16376
+mask = X1010X0XX01000X0001000X0X0010000X110
+mem[59573] = 60076
+mem[14516] = 1634251
+mem[36459] = 843815961
+mem[3293] = 265
+mask = 01010100001X00101100X0X0111X11001101
+mem[28480] = 437785448
+mem[29724] = 28414900
+mem[22867] = 14233982
+mem[45019] = 1644931
+mask = 111XX0100XX0101011X1011X001X11X101X0
+mem[28545] = 461
+mem[14609] = 3934
+mem[50765] = 103069037
+mem[12832] = 1926345
+mem[36929] = 1633120
+mem[33372] = 23156328
+mask = X11X000000XX11X011X1XX0110000X000001
+mem[12748] = 2069634
+mem[35456] = 8101313
+mem[21508] = 243298359
+mask = X1X01001011X001001010110101100X10011
+mem[27953] = 3450
+mem[22680] = 50713870
+mem[55768] = 182841527
+mem[29021] = 70952
+mem[59553] = 38886
+mem[45283] = 84846018
+mem[29849] = 66463
+mask = 100XX1111X0011100X01000X010000000101
+mem[53280] = 2165
+mem[551] = 556704
+mem[3512] = 16238
+mem[2868] = 27158838
+mem[23659] = 245809
+mask = 1110X001X010X0101X01110100000X10111X
+mem[36789] = 51664764
+mem[33348] = 1689925
+mem[19745] = 849985
+mem[7335] = 3678
+mem[25634] = 2206
+mem[13782] = 1985
+mask = 11110000X0100110XX11X0110100X0110001
+mem[18372] = 193162
+mem[5878] = 7411977
+mem[30564] = 89127
+mem[45210] = 64823202
+mem[22016] = 3987667
+mem[7092] = 370183817
+mem[64313] = 2487681
+mask = 10X0000100100X101X1X1101110000X0X011
+mem[6160] = 9833
+mem[26168] = 120117155
+mem[13319] = 18180
+mask = 1X01X001X0X01X1011110001100X0110X100
+mem[29267] = 385
+mem[13597] = 535380132
+mem[58085] = 3408333
+mem[46178] = 246464
+mem[64848] = 140510
+mem[19733] = 322520311
+mask = 1101101110XX1000X001101110000000X1X0
+mem[56355] = 894
+mem[13795] = 13763
+mem[38247] = 1412147
+mem[46043] = 10668
+mem[9370] = 8326048
+mem[27470] = 524
+mask = 111010010X1000100X01X1XX10XX0XX10000
+mem[45269] = 129135
+mem[33483] = 11595926
+mem[9827] = 18572496
+mem[27939] = 32963714
+mem[48103] = 89693846
+mask = X11XX111001001101101010101000X000101
+mem[12666] = 61469
+mem[40505] = 14463
+mem[49277] = 118992
+mem[16161] = 105
+mem[23321] = 183700
+mem[48653] = 930591910
+mask = 111X00100X0X1010110100001X011X1X00X0
+mem[59706] = 227615179
+mem[21221] = 1424545
+mem[54816] = 37682162
+mem[57789] = 91718
+mem[25191] = 3615219
+mem[10390] = 240
+mask = 1110X0XX001XX010X1110110001011010X01
+mem[60974] = 5579328
+mem[61131] = 337545
+mem[16774] = 2030
+mem[6637] = 5249

2020/d14/ex2/ex2.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python
+import itertools
+import re
+import sys
+from dataclasses import dataclass
+from typing import Dict, Iterator, List
+
+
+@dataclass
+class Mask:
+    ones: int
+    zeros: int
+
+
+Memory = Dict[int, int]
+
+
+def gen_floats(xs: int) -> Iterator[int]:
+    x_positions = [i for i in range(36) if (1 << i) & xs]
+
+    return (
+        sum(1 << x_positions[i] for i, v in enumerate(val) if v == 1)
+        for val in itertools.product([0, 1], repeat=len(x_positions))
+    )
+
+
+def solve(raw: List[str]) -> int:
+    mask = Mask(
+        0,
+        (2 << 36) - 1,
+    )
+    mem_pattern = re.compile("mem\\[([0-9]+)\\] = ([0-9]+)")
+    mask_pattern = re.compile("mask = ([01X]+)")
+    mem: Memory = {}
+    for instr in raw:
+        if (mem_match := mem_pattern.match(instr)) is not None:
+            addr, val = int(mem_match.group(1)), int(mem_match.group(2))
+            addr |= mask.ones
+            xs = ~mask.ones & mask.zeros
+            addr &= ~xs  # Put floating bits to 0
+            for x in gen_floats(xs):
+                mem[addr | x] = val
+        elif (mask_match := mask_pattern.match(instr)) is not None:
+            ones = int(mask_match.group(1).replace("X", "0"), 2)
+            zeros = int(mask_match.group(1).replace("X", "1"), 2)
+            mask = Mask(ones, zeros)
+    return sum(mem.values())
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d14/ex2/input

@@ -0,0 +1,575 @@
+mask = 110100X1X01011X01X0X000111X00XX1010X
+mem[29267] = 4155
+mem[6177] = 494929
+mem[47500] = 15063410
+mask = 11110X000010XX10X11X00X11010X0X00101
+mem[10164] = 73599
+mem[61707] = 15191
+mem[53825] = 69618638
+mem[15953] = 10067309
+mem[39889] = 10761258
+mask = 11XXX0XX001X01101111X001000X01X10000
+mem[6917] = 2088
+mem[10383] = 52991144
+mem[14304] = 84876
+mem[6464] = 14167
+mask = X11X0X00001010101XX101100X011X000XX1
+mem[58256] = 51753803
+mem[2919] = 21619
+mask = 111100X00010101011X1XXXXX01X000001X1
+mem[13063] = 6587
+mem[28673] = 3893
+mem[53317] = 236744
+mem[64240] = 29367045
+mask = XX11101X0011X01X1111X001X1X000101110
+mem[59497] = 6945823
+mem[44552] = 193130494
+mem[15034] = 10641
+mem[25467] = 17061678
+mask = X11110X11X11X000110110010110011X0001
+mem[22485] = 90244
+mem[38996] = 221133
+mem[15034] = 12927587
+mem[4425] = 31960477
+mem[18544] = 51522085
+mask = 111100100010X0101XX1110100000XXX0001
+mem[53765] = 1528530
+mem[18576] = 68702
+mem[6484] = 170802
+mem[62813] = 857
+mask = 1X1101010X1X111X110101X1010100010010
+mem[34688] = 36117345
+mem[12832] = 14851833
+mem[12097] = 43
+mem[63931] = 875829
+mask = 10XXX01100101010X1X111010000101101X1
+mem[33582] = 28611764
+mem[53969] = 2641
+mem[53107] = 99965
+mem[40648] = 1834153
+mem[55768] = 974
+mem[52274] = 7634
+mask = 111010X10010111X1111X0XXX00110110001
+mem[43784] = 12232
+mem[23109] = 11403
+mem[18521] = 145694
+mem[12479] = 621
+mask = XX000011001000101111XX101X1X10101X11
+mem[22233] = 30348
+mem[7554] = 346199
+mem[1904] = 12735
+mem[23360] = 73797
+mem[22803] = 62630115
+mask = 1110X0X0X010X01011X10110001X00XX0110
+mem[17347] = 310008019
+mem[39889] = 8179468
+mem[57304] = 861379
+mem[2513] = 10343
+mask = 1111X00100101X1X110101111111010000XX
+mem[49939] = 39353857
+mem[48794] = 4266
+mem[16061] = 2768
+mem[7728] = 103608
+mem[17473] = 8980
+mask = 1001XXX10X0X11X0010100001100X0110101
+mem[21497] = 412878
+mem[49939] = 429971
+mem[3405] = 20518
+mem[6160] = 51622
+mem[43784] = 179922643
+mask = 101100X1001X10XX1101X00XX0101000100X
+mem[52378] = 1530
+mem[11326] = 121760772
+mem[58232] = 164870285
+mem[21604] = 17658898
+mem[56257] = 373
+mem[37783] = 7760640
+mem[3927] = 427054839
+mask = 1111XXX10010X11X110101011X10XX10000X
+mem[18153] = 234818
+mem[56755] = 531
+mem[50940] = 4428
+mem[14849] = 2185318
+mask = 10110001X0101010X101010X10000X110001
+mem[53880] = 33275
+mem[61621] = 40021
+mem[10319] = 9468
+mem[34607] = 1186
+mem[43043] = 51628146
+mem[14912] = 2626679
+mem[4627] = 377
+mask = 111X0X00XXX01110011X10001X1110010101
+mem[39892] = 6297
+mem[13182] = 4721
+mem[41736] = 497649
+mem[40923] = 905
+mask = 1X1X00110010011X1110X0001X10011XXX00
+mem[27118] = 898
+mem[59800] = 499005720
+mask = 11X00101001011100X01X01XX100XX010110
+mem[56505] = 23945612
+mem[13987] = 14200131
+mem[30557] = 10396
+mask = 1110000100X1X01X011111X001101011010X
+mem[22942] = 642242
+mem[43083] = 787
+mem[55307] = 818610470
+mem[13145] = 35815
+mask = 00101X01001010X011111101X1001X010101
+mem[34] = 928
+mem[45041] = 12613
+mem[20825] = 18260
+mem[33068] = 34949
+mem[51299] = 1228577
+mask = X11X0001101X001X11010001110X00X01X11
+mem[5587] = 3120
+mem[49934] = 166656215
+mem[12068] = 15929077
+mem[51471] = 225039
+mem[35781] = 703735
+mem[2227] = 788305092
+mem[30564] = 4758296
+mask = 1111X1X000100X10X10010011XX011010110
+mem[44917] = 195410918
+mem[33352] = 480672
+mem[18755] = 6376
+mask = X1X1010000100010XXX0XXX011X011010000
+mem[48717] = 6124
+mem[6213] = 13466626
+mem[33804] = 41450
+mem[42319] = 1001042
+mem[32039] = 22800
+mem[37805] = 3719
+mem[21650] = 5310058
+mask = 1X110X0X00101X10110100111X10000X00X1
+mem[64021] = 527213
+mem[54049] = 2076239
+mem[23361] = 10197597
+mem[29280] = 28451017
+mem[3136] = 46819
+mem[21711] = 62402971
+mask = 1X01000100X01110X101000101000XX10X01
+mem[20911] = 1251
+mem[3136] = 84
+mem[27425] = 174128253
+mem[20825] = 20910
+mem[36929] = 13761934
+mem[44528] = 983
+mask = 1111X000001X001X11111XX1X00X0110000X
+mem[516] = 6216446
+mem[33582] = 140720
+mem[11248] = 208955105
+mem[42641] = 4364
+mask = 101X1X10101X10001XXX0001111100011X11
+mem[38531] = 39598
+mem[46500] = 52608117
+mem[43473] = 96876
+mem[14304] = 59167889
+mem[53240] = 15525
+mask = X001100X00X01110111X1101010X00101111
+mem[14918] = 2357
+mem[6160] = 1208519
+mem[34729] = 1611506
+mem[51158] = 2346
+mask = 111X00100000101011010111001110XXX1X0
+mem[28673] = 331536
+mem[43917] = 324
+mem[45633] = 398602
+mem[49398] = 1861
+mem[1376] = 625904
+mask = 01101X00001010100101100X101X10X00011
+mem[28094] = 8805622
+mem[30532] = 3723
+mem[4708] = 14406
+mem[9094] = 50623
+mem[61707] = 73798
+mem[4885] = 224
+mask = 11X1000X001011X011010X01010XX10X0001
+mem[7236] = 865782
+mem[15953] = 487381549
+mask = XX1011000010X11X010X11111100X11100XX
+mem[18078] = 16242735
+mem[5995] = 18850
+mem[9604] = 839527
+mem[47055] = 216488
+mem[4059] = 554189
+mem[12823] = 346
+mask = 111100010010111X1X01X1110001X001X000
+mem[936] = 6429561
+mem[40513] = 1695095
+mem[60924] = 252
+mem[55142] = 557439
+mask = 10111010X010X0X01XX1100111010X1X1X00
+mem[38842] = 738
+mem[30409] = 10094059
+mem[303] = 98943
+mem[8017] = 251227
+mask = X1X0X00100100010X101001100110001X100
+mem[57304] = 1975648
+mem[56257] = 1580
+mem[45571] = 14800
+mask = 0XX00011001000X0X1111X11101X101X1000
+mem[43189] = 4422
+mem[40391] = 167654070
+mask = 1110X01100100X10111XX01X1000XX01100X
+mem[33804] = 1018
+mem[29496] = 93900747
+mem[9245] = 138506
+mem[62151] = 674748
+mem[4762] = 434956
+mem[37596] = 103373
+mem[27932] = 5730935
+mask = 0111X0000010101X111X01001010101110X0
+mem[36174] = 5162986
+mem[33114] = 3116668
+mem[64325] = 3171
+mem[6917] = 5566099
+mem[30076] = 176956
+mem[14847] = 60238674
+mask = 1110100X00100010XXX1X110000000001X01
+mem[2546] = 7549354
+mem[22803] = 386154
+mem[28386] = 86719
+mask = 11110100X00011X011X10X0011011010X100
+mem[52611] = 131
+mem[47628] = 266
+mem[22198] = 764
+mem[4444] = 406
+mem[20006] = 3520555
+mask = 10111X101010X000100110011100X01X1010
+mem[15300] = 345854040
+mem[49359] = 38235897
+mem[38614] = 54370972
+mem[18472] = 94915
+mem[36746] = 697
+mask = 11111011X011101X111X10100100000X0111
+mem[29295] = 943139945
+mem[9245] = 1505677
+mem[14391] = 3398
+mask = 1001X1X1X1001X10010100001X01XX11X101
+mem[14613] = 15025
+mem[58121] = 1912
+mem[300] = 37310097
+mask = X011001X001010XX11X1100X00XXX0011110
+mem[17438] = 69372377
+mem[39932] = 850
+mem[53370] = 7579742
+mem[49975] = 2831104
+mem[37777] = 2859
+mem[49238] = 508
+mem[57733] = 3881
+mask = 11110010001010X011X1X1X11XX00XX101X0
+mem[29112] = 64162
+mem[9687] = 10115647
+mem[8456] = 404111433
+mem[23461] = 21916957
+mem[49272] = 29938
+mem[20911] = 3016
+mem[45508] = 27114
+mask = X11010X000101X10X1X10X1XXX0110000111
+mem[17094] = 1379888
+mem[19615] = 633
+mem[43148] = 125580
+mem[12097] = 33116239
+mem[34723] = 9358
+mask = X111X010010X101011110X00011111000101
+mem[63053] = 691425156
+mem[24475] = 286162
+mem[54863] = 76914
+mem[58008] = 1422
+mem[24141] = 657
+mem[34729] = 49841
+mask = 1110XXXXX0X011100X0101X1010X10001100
+mem[14613] = 4510
+mem[47926] = 39745
+mem[8475] = 327407289
+mem[22599] = 699202
+mem[53880] = 822
+mem[56755] = 1267566
+mask = 1X1110X1101X100011X110X01X0001110XX1
+mem[8272] = 301
+mem[65364] = 3792396
+mem[38614] = 591
+mem[10929] = 4608
+mem[30304] = 2186
+mask = 1110000110X0001011010011110000X0X01X
+mem[12247] = 1533938
+mem[24376] = 12421
+mem[16168] = 17660
+mask = 001000000010101X11X101X00001X00XX0X0
+mem[606] = 2029
+mem[55307] = 598939
+mem[26724] = 59403185
+mask = 11X10XX000X01X101X01010110000X00000X
+mem[4022] = 39755
+mem[39281] = 801343
+mem[46388] = 161
+mem[21585] = 11357692
+mem[45828] = 28056
+mask = 11111X11101111001101XX11X1010X00X11X
+mem[47755] = 3034
+mem[42293] = 208825
+mem[29700] = 38238
+mem[22485] = 1319489
+mask = 110100X0001X101X11010011100X000X0101
+mem[3549] = 18335450
+mem[58890] = 2676627
+mem[58022] = 17558
+mem[54581] = 2533100
+mem[10929] = 280423870
+mem[63555] = 2319
+mem[2546] = 926
+mask = 1110X011001XXX101111X1110001X110X001
+mem[23536] = 4353
+mem[59601] = 798347
+mem[20671] = 389086
+mask = 111100X000101010110101001XX1XX11X110
+mem[1922] = 27551122
+mem[19645] = 370473454
+mem[32150] = 214932
+mem[22144] = 2339
+mask = 111000100110X01X1101101XX01111010X00
+mem[35424] = 110774
+mem[57733] = 531999
+mem[45139] = 30278097
+mem[21648] = 16240
+mask = 1010X00100X00010111101001X0X00X10010
+mem[58367] = 71950736
+mem[855] = 21617593
+mem[27425] = 1287663
+mem[45595] = 1472271
+mem[37043] = 1635315
+mask = 111X00X1001X110011010010X0001100000X
+mem[7355] = 208029905
+mem[52551] = 6755
+mem[49542] = 11911
+mem[44588] = 377151
+mem[64240] = 61021
+mem[8017] = 3572
+mask = 0X101000001011X011X101X0000X0000X011
+mem[47482] = 1568110
+mem[28053] = 707
+mem[60195] = 1645
+mask = 11110000001X101011X1101010110X00011X
+mem[27869] = 17384703
+mem[17643] = 2734129
+mem[12802] = 3774302
+mem[64154] = 916
+mask = X111X00X0010110011010X01111001010XX1
+mem[64313] = 102372
+mem[1522] = 15753175
+mem[40584] = 728098
+mem[4315] = 227246865
+mem[55272] = 7469
+mem[15889] = 7541958
+mem[2464] = 371279
+mask = XX01X011X01011101101X00XX10X00110100
+mem[5157] = 275
+mem[12864] = 4756
+mem[31054] = 1960
+mem[52498] = 2797835
+mem[62151] = 4302055
+mask = 0X1X00X000101X1X1111010X000101X00110
+mem[10919] = 612216
+mem[15357] = 629148
+mem[52500] = 9503
+mem[17094] = 7855156
+mem[6652] = 34492510
+mem[10426] = 726153
+mask = 010X00110010001X1111101XXX01X0X00101
+mem[12974] = 9133
+mem[14108] = 3766
+mem[24429] = 1803969
+mem[55142] = 36626772
+mem[34019] = 473252
+mem[33604] = 206855588
+mask = XX1010X10010X01011X11X0011X01011XX11
+mem[60027] = 841211
+mem[21538] = 91609915
+mem[6123] = 97596
+mem[50346] = 1087
+mem[40221] = 644
+mem[8944] = 551344
+mask = 111000X0001XX0100111111001100X00000X
+mem[35547] = 950205
+mem[3312] = 880
+mem[48780] = 112556701
+mem[4531] = 126242
+mem[39889] = 1541
+mem[24463] = 9010512
+mask = 11XX101X1X101X001X0111X101000X1X0001
+mem[64081] = 140604
+mem[59066] = 420736
+mem[48653] = 54226
+mem[32039] = 128940
+mem[35847] = 5
+mask = 1001XX01X000111011X1X101000X0X0X1011
+mem[58689] = 43170762
+mem[12832] = 298144839
+mem[1474] = 132921
+mem[48057] = 37242
+mem[50871] = 3602555
+mem[56611] = 31214078
+mask = 101X000100X011X01101XX10011X0XX1X011
+mem[7317] = 2861082
+mem[59424] = 214468
+mask = 10X110111011101010110X10111001100XX1
+mem[19313] = 2195784
+mem[38614] = 1263318
+mem[26637] = 54905795
+mem[8165] = 209848
+mem[2919] = 173
+mem[928] = 7285
+mask = 1011101XX011XX1X10111000011010X11111
+mem[55792] = 11794686
+mem[48675] = 377
+mem[6484] = 857
+mem[60951] = 523305753
+mem[40488] = 713
+mem[61858] = 12068
+mask = 1110X1XX0010111X01011111X000X0X1011X
+mem[65124] = 178147455
+mem[15914] = 3503977
+mem[35424] = 232628
+mask = 11X0XXX100100010X1X101001XX100110001
+mem[14344] = 2670
+mem[20825] = 27980258
+mem[2792] = 447228346
+mem[29177] = 822367210
+mem[30651] = 1658444
+mem[14099] = 389
+mask = 110001X1X010X110X101X011X100X1X10110
+mem[54275] = 15249248
+mem[3293] = 9475932
+mem[8835] = 864371828
+mem[45269] = 3632
+mem[19645] = 580157
+mask = 101X101XX01X10X01X1110X0110X1011011X
+mem[40765] = 53494316
+mem[35543] = 11261002
+mem[13933] = 768
+mem[38594] = 464498
+mem[64240] = 22406
+mask = 110100010X10111011X100X1010001X1X1X0
+mem[20911] = 225
+mem[12748] = 621
+mem[29907] = 363502
+mem[14613] = 3957288
+mem[64313] = 389459
+mem[21648] = 2008398
+mask = 111X101X00X0X010X1110110X00011X1X011
+mem[33134] = 1049991943
+mem[25205] = 4126902
+mask = 1X10101001101X1011X100X00X1X1101X100
+mem[18755] = 713
+mem[38650] = 119518
+mem[33804] = 3211485
+mem[14609] = 10752655
+mem[59822] = 234204205
+mask = 1X1XX0111X1X11001101100X110100X0X010
+mem[44041] = 255408886
+mem[62469] = 22090167
+mem[12247] = 1760642
+mask = 1110101000001X101X11010010XX110001XX
+mem[30389] = 29125
+mem[10833] = 1979
+mask = 11111010111X1X001001111X1X1000010001
+mem[20949] = 90971
+mem[16774] = 9470584
+mem[56713] = 73907316
+mem[9264] = 36226
+mem[60287] = 571
+mem[25303] = 16376
+mask = X1010X0XX01000X0001000X0X0010000X110
+mem[59573] = 60076
+mem[14516] = 1634251
+mem[36459] = 843815961
+mem[3293] = 265
+mask = 01010100001X00101100X0X0111X11001101
+mem[28480] = 437785448
+mem[29724] = 28414900
+mem[22867] = 14233982
+mem[45019] = 1644931
+mask = 111XX0100XX0101011X1011X001X11X101X0
+mem[28545] = 461
+mem[14609] = 3934
+mem[50765] = 103069037
+mem[12832] = 1926345
+mem[36929] = 1633120
+mem[33372] = 23156328
+mask = X11X000000XX11X011X1XX0110000X000001
+mem[12748] = 2069634
+mem[35456] = 8101313
+mem[21508] = 243298359
+mask = X1X01001011X001001010110101100X10011
+mem[27953] = 3450
+mem[22680] = 50713870
+mem[55768] = 182841527
+mem[29021] = 70952
+mem[59553] = 38886
+mem[45283] = 84846018
+mem[29849] = 66463
+mask = 100XX1111X0011100X01000X010000000101
+mem[53280] = 2165
+mem[551] = 556704
+mem[3512] = 16238
+mem[2868] = 27158838
+mem[23659] = 245809
+mask = 1110X001X010X0101X01110100000X10111X
+mem[36789] = 51664764
+mem[33348] = 1689925
+mem[19745] = 849985
+mem[7335] = 3678
+mem[25634] = 2206
+mem[13782] = 1985
+mask = 11110000X0100110XX11X0110100X0110001
+mem[18372] = 193162
+mem[5878] = 7411977
+mem[30564] = 89127
+mem[45210] = 64823202
+mem[22016] = 3987667
+mem[7092] = 370183817
+mem[64313] = 2487681
+mask = 10X0000100100X101X1X1101110000X0X011
+mem[6160] = 9833
+mem[26168] = 120117155
+mem[13319] = 18180
+mask = 1X01X001X0X01X1011110001100X0110X100
+mem[29267] = 385
+mem[13597] = 535380132
+mem[58085] = 3408333
+mem[46178] = 246464
+mem[64848] = 140510
+mem[19733] = 322520311
+mask = 1101101110XX1000X001101110000000X1X0
+mem[56355] = 894
+mem[13795] = 13763
+mem[38247] = 1412147
+mem[46043] = 10668
+mem[9370] = 8326048
+mem[27470] = 524
+mask = 111010010X1000100X01X1XX10XX0XX10000
+mem[45269] = 129135
+mem[33483] = 11595926
+mem[9827] = 18572496
+mem[27939] = 32963714
+mem[48103] = 89693846
+mask = X11XX111001001101101010101000X000101
+mem[12666] = 61469
+mem[40505] = 14463
+mem[49277] = 118992
+mem[16161] = 105
+mem[23321] = 183700
+mem[48653] = 930591910
+mask = 111X00100X0X1010110100001X011X1X00X0
+mem[59706] = 227615179
+mem[21221] = 1424545
+mem[54816] = 37682162
+mem[57789] = 91718
+mem[25191] = 3615219
+mem[10390] = 240
+mask = 1110X0XX001XX010X1110110001011010X01
+mem[60974] = 5579328
+mem[61131] = 337545
+mem[16774] = 2030
+mem[6637] = 5249

2020/d15/ex1/ex1.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+import itertools
+import sys
+from collections import defaultdict
+from typing import Dict, Iterator, List
+
+
+def nth(iterable: Iterator[int], n: int) -> int:
+    return next(itertools.islice(iterable, n, None))
+
+
+def spoken(spoken: List[int]) -> Iterator[int]:
+    turn = 0
+    turns: Dict[int, List[int]] = defaultdict(list)
+    for last in spoken:
+        turn += 1
+        turns[last].append(turn)
+        yield last
+    while True:
+        if len(last_turn := turns[last]) < 2:
+            last = 0
+        else:
+            last = last_turn[-1] - last_turn[-2]
+        turn += 1
+        turns[last].append(turn)
+        yield last
+
+
+def solve(nums: List[int]) -> int:
+    return nth(spoken(nums), 2020 - 1)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    assert len(input) == 1
+    print(solve([int(i) for i in input[0].split(",")]))
+
+
+if __name__ == "__main__":
+    main()

2020/d15/ex1/input

@@ -0,0 +1 @@
+0,13,1,16,6,17

2020/d15/ex2/ex2.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python
+import itertools
+import sys
+from collections import defaultdict
+from typing import Dict, Iterator, List
+
+
+def nth(iterable: Iterator[int], n: int) -> int:
+    return next(itertools.islice(iterable, n, None))
+
+
+def spoken(spoken: List[int]) -> Iterator[int]:
+    turn = 0
+    turns: Dict[int, List[int]] = defaultdict(list)
+    for last in spoken:
+        turn += 1
+        turns[last].append(turn)
+        yield last
+    while True:
+        if len(last_turn := turns[last]) < 2:
+            last = 0
+        else:
+            last = last_turn[-1] - last_turn[-2]
+        turn += 1
+        turns[last].append(turn)
+        yield last
+
+
+def solve(nums: List[int]) -> int:
+    return nth(spoken(nums), 30000000 - 1)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    assert len(input) == 1
+    print(solve([int(i) for i in input[0].split(",")]))
+
+
+if __name__ == "__main__":
+    main()

2020/d15/ex2/input

@@ -0,0 +1 @@
+0,13,1,16,6,17

2020/d16/ex1/ex1.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python
+import sys
+from typing import Dict, List, Set, Tuple
+
+Ranges = Dict[str, Set[int]]
+Ticket = List[int]
+
+
+def parse(raw: List[str]) -> Tuple[Ranges, List[Ticket]]:
+    def extract_field_info(line: str) -> Tuple[str, Set[int]]:
+        field, rest = line.split(":")
+        ranges: Set[int] = set()
+        for r in rest.strip().split(" or "):
+            lhs, rhs = r.split("-")
+            ranges |= set(range(int(lhs), int(rhs) + 1))
+        return field, ranges
+
+    def parse_tickets(line: str) -> Ticket:
+        return [int(i) for i in line.split(",")]
+
+    ranges: Ranges = {}
+    tickets: List[Ticket] = []
+
+    should_parse_tickets = False
+    for line in raw:
+        if line == "":
+            should_parse_tickets = True
+            continue
+        if "ticket" in line:
+            continue
+        if should_parse_tickets:
+            tickets.append(parse_tickets(line))
+        else:
+            field, field_ranges = extract_field_info(line)
+            ranges[field] = field_ranges
+
+    return ranges, tickets
+
+
+def solve(raw: List[str]) -> int:
+    ranges, tickets = parse(raw)
+    sum = 0
+
+    for ticket in tickets[1:]:
+        for val in ticket:
+            if any(val in r for r in ranges.values()):
+                continue
+            sum += val
+
+    return sum
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d16/ex1/input

@@ -0,0 +1,264 @@
+departure location: 44-709 or 728-964
+departure station: 42-259 or 269-974
+departure platform: 39-690 or 701-954
+departure track: 49-909 or 924-965
+departure date: 48-759 or 779-957
+departure time: 38-115 or 121-965
+arrival location: 32-808 or 818-949
+arrival station: 45-418 or 439-949
+arrival platform: 35-877 or 894-962
+arrival track: 26-866 or 872-958
+class: 32-727 or 736-969
+duration: 35-446 or 460-968
+price: 26-545 or 571-961
+route: 35-207 or 223-960
+row: 43-156 or 165-955
+seat: 26-172 or 181-966
+train: 49-582 or 606-952
+type: 36-279 or 303-968
+wagon: 26-657 or 672-959
+zone: 36-621 or 637-963
+
+your ticket:
+83,127,131,137,113,73,139,101,67,53,107,103,59,149,109,61,79,71,97,89
+
+nearby tickets:
+539,619,928,309,835,99,521,478,54,340,849,859,376,357,524,841,221,935,806,147
+231,827,907,526,238,542,181,853,303,143,116,701,206,140,927,203,443,753,151,258
+445,679,816,617,82,102,197,100,239,490,488,78,707,349,689,335,847,183,144,314
+476,833,232,489,937,256,87,409,223,364,978,939,398,331,153,945,513,237,934,272
+492,927,578,788,808,529,739,20,201,688,405,877,228,168,361,521,400,398,618,520
+332,694,481,571,523,516,395,122,844,358,232,132,315,486,899,154,269,201,831,50
+907,706,927,126,133,97,217,334,745,751,580,862,526,845,680,125,96,445,863,322
+498,753,844,670,150,657,853,150,377,487,152,369,500,241,360,204,142,236,948,91
+578,675,491,230,332,464,258,858,508,330,492,780,494,234,839,645,160,795,896,687
+814,875,617,185,490,490,501,940,224,751,609,844,442,525,640,609,336,251,532,685
+684,196,757,841,580,576,18,319,150,249,676,337,155,115,652,638,475,398,789,379
+445,490,199,140,88,694,184,247,307,386,198,85,905,860,484,244,532,224,681,251
+172,936,701,440,779,941,639,351,238,70,787,91,259,340,58,541,815,399,238,202
+715,369,504,226,138,866,783,231,580,147,82,335,533,144,530,462,836,751,473,801
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2020/d16/ex2/ex2.py

@@ -0,0 +1,106 @@
+#!/usr/bin/env python
+import math
+import sys
+from typing import Dict, List, Set, Tuple
+
+Ranges = Dict[str, Set[int]]
+Ticket = List[int]
+
+
+def parse(raw: List[str]) -> Tuple[Ranges, List[Ticket]]:
+    def extract_field_info(line: str) -> Tuple[str, Set[int]]:
+        field, rest = line.split(":")
+        ranges: Set[int] = set()
+        for r in rest.strip().split(" or "):
+            lhs, rhs = r.split("-")
+            ranges |= set(range(int(lhs), int(rhs) + 1))
+        return field, ranges
+
+    def parse_tickets(line: str) -> Ticket:
+        return [int(i) for i in line.split(",")]
+
+    ranges: Ranges = {}
+    tickets: List[Ticket] = []
+
+    should_parse_tickets = False
+    for line in raw:
+        if line == "":
+            should_parse_tickets = True
+            continue
+        if "ticket" in line:
+            continue
+        if should_parse_tickets:
+            tickets.append(parse_tickets(line))
+        else:
+            field, field_ranges = extract_field_info(line)
+            ranges[field] = field_ranges
+
+    return ranges, tickets
+
+
+def verify_mapping(possibilites: Dict[int, Set[str]]) -> None:
+    for pos in possibilites.values():
+        assert len(pos) == 1
+
+
+def cross_eliminate(possibilites: Dict[int, Set[str]]) -> None:
+    while True:
+        eliminated = False
+        for pos in possibilites:
+            if len(possibilites[pos]) != 1:
+                continue
+            for other_pos in possibilites:
+                if other_pos == pos:
+                    continue
+                if len(possibilites[other_pos] & possibilites[pos]) == 0:
+                    continue
+                eliminated = True
+                possibilites[other_pos] = possibilites[other_pos] - (possibilites[pos])
+        if not eliminated:
+            break
+
+
+def match_ranges(ranges: Ranges, tickets: List[Ticket]) -> Dict[int, str]:
+    possibilites: Dict[int, Set[str]] = {
+        i: set(ranges.keys()) for i in range(len(ranges))
+    }
+
+    def whittle_down() -> None:
+        for t in tickets[1:]:
+            for i, val in enumerate(t):
+                for field, valid in ranges.items():
+                    if val in valid:
+                        continue
+                    possibilites[i].remove(field)
+
+    whittle_down()
+    cross_eliminate(possibilites)
+    verify_mapping(possibilites)
+
+    return {i: pos.pop() for i, pos in possibilites.items()}
+
+
+def solve(raw: List[str]) -> int:
+    ranges, tickets = parse(raw)
+
+    def valid(t: Ticket) -> bool:
+        for val in t:
+            if not any(val in r for r in ranges.values()):
+                return False
+        return True
+
+    tickets = [t for i, t in enumerate(tickets) if i == 0 or valid(t)]
+
+    mapping = match_ranges(ranges, tickets)
+    return math.prod(
+        tickets[0][i] for i, field in mapping.items() if "departure" in field
+    )
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d16/ex2/input

@@ -0,0 +1,264 @@
+departure location: 44-709 or 728-964
+departure station: 42-259 or 269-974
+departure platform: 39-690 or 701-954
+departure track: 49-909 or 924-965
+departure date: 48-759 or 779-957
+departure time: 38-115 or 121-965
+arrival location: 32-808 or 818-949
+arrival station: 45-418 or 439-949
+arrival platform: 35-877 or 894-962
+arrival track: 26-866 or 872-958
+class: 32-727 or 736-969
+duration: 35-446 or 460-968
+price: 26-545 or 571-961
+route: 35-207 or 223-960
+row: 43-156 or 165-955
+seat: 26-172 or 181-966
+train: 49-582 or 606-952
+type: 36-279 or 303-968
+wagon: 26-657 or 672-959
+zone: 36-621 or 637-963
+
+your ticket:
+83,127,131,137,113,73,139,101,67,53,107,103,59,149,109,61,79,71,97,89
+
+nearby tickets:
+539,619,928,309,835,99,521,478,54,340,849,859,376,357,524,841,221,935,806,147
+231,827,907,526,238,542,181,853,303,143,116,701,206,140,927,203,443,753,151,258
+445,679,816,617,82,102,197,100,239,490,488,78,707,349,689,335,847,183,144,314
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+492,927,578,788,808,529,739,20,201,688,405,877,228,168,361,521,400,398,618,520
+332,694,481,571,523,516,395,122,844,358,232,132,315,486,899,154,269,201,831,50
+907,706,927,126,133,97,217,334,745,751,580,862,526,845,680,125,96,445,863,322
+498,753,844,670,150,657,853,150,377,487,152,369,500,241,360,204,142,236,948,91
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2020/d17/ex1/ex1.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+
+import itertools
+import sys
+from typing import Iterator, Set, Tuple
+
+Point = Tuple[int, int, int]
+Grid = Set[Point]
+
+
+def update(grid: Grid) -> Grid:
+    def neightbours(p: Point) -> Iterator[Point]:
+        for dx, dy, dz in itertools.product(range(-1, 2), repeat=3):
+            if dx == 0 and dy == 0 and dz == 0:
+                continue
+            yield p[0] + dx, p[1] + dy, p[2] + dz
+
+    def count_neighbours(p: Point) -> int:
+        return sum(n in grid for n in neightbours(p))
+
+    new_grid: Grid = set()
+    seen: Set[Point] = set()
+    for p in grid:
+        for n in itertools.chain(neightbours(p), [p]):
+            if n in seen:
+                continue
+            seen |= {n}
+            active = n in grid
+            num_neighbours = count_neighbours(n)
+
+            if active and num_neighbours in [2, 3]:
+                new_grid |= {n}
+            elif active:
+                continue
+            elif num_neighbours == 3:
+                new_grid |= {n}
+            else:
+                continue
+
+    return new_grid
+
+
+def solve(grid: Grid) -> int:
+
+    for __ in range(6):
+        grid = update(grid)
+
+    return len(grid)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(
+        solve(
+            {
+                (i, j, 0)
+                for i, line in enumerate(input)
+                for j, x in enumerate(line)
+                if x == "#"
+            }
+        )
+    )
+
+
+if __name__ == "__main__":
+    main()

2020/d17/ex1/input

@@ -0,0 +1,8 @@
+######.#
+#.###.#.
+###.....
+#.####..
+##.#.###
+.######.
+###.####
+######.#

2020/d17/ex2/ex2.py

@@ -0,0 +1,66 @@
+#!/usr/bin/env python
+
+import itertools
+import sys
+from typing import Iterator, Set, Tuple
+
+Point = Tuple[int, int, int, int]
+Grid = Set[Point]
+
+
+def update(grid: Grid) -> Grid:
+    def neightbours(p: Point) -> Iterator[Point]:
+        for dx, dy, dz, dw in itertools.product(range(-1, 2), repeat=4):
+            if dx == 0 and dy == 0 and dz == 0 and dw == 0:
+                continue
+            yield p[0] + dx, p[1] + dy, p[2] + dz, p[3] + dw
+
+    def count_neighbours(p: Point) -> int:
+        return sum(n in grid for n in neightbours(p))
+
+    new_grid: Grid = set()
+    seen: Set[Point] = set()
+    for p in grid:
+        for n in itertools.chain(neightbours(p), [p]):
+            if n in seen:
+                continue
+            seen |= {n}
+            active = n in grid
+            num_neighbours = count_neighbours(n)
+
+            if active and num_neighbours in [2, 3]:
+                new_grid |= {n}
+            elif active:
+                continue
+            elif num_neighbours == 3:
+                new_grid |= {n}
+            else:
+                continue
+
+    return new_grid
+
+
+def solve(grid: Grid) -> int:
+
+    for __ in range(6):
+        grid = update(grid)
+
+    return len(grid)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(
+        solve(
+            {
+                (i, j, 0, 0)
+                for i, line in enumerate(input)
+                for j, x in enumerate(line)
+                if x == "#"
+            }
+        )
+    )
+
+
+if __name__ == "__main__":
+    main()

2020/d17/ex2/input

@@ -0,0 +1,8 @@
+######.#
+#.###.#.
+###.....
+#.####..
+##.#.###
+.######.
+###.####
+######.#

2020/d18/ex1/ex1.py

@@ -0,0 +1,72 @@
+#!/usr/bin/env python
+
+import sys
+from typing import Callable, Dict, List
+
+"""
+E : G [ (+|*) G ]*
+
+G : '(' E ')' | CONSTANT
+"""
+
+
+def parse_g(expr: List[str]) -> int:
+    top = expr.pop(0)
+    if top == "(":
+        ans = parse_e(expr)
+        assert expr.pop(0) == ")"
+        return ans
+    return int(top)
+
+
+def parse_e(expr: List[str]) -> int:
+    ops: Dict[str, Callable[[int, int], int]] = {
+        "*": lambda lhs, rhs: lhs * rhs,
+        "+": lambda lhs, rhs: lhs + rhs,
+    }
+    lhs = parse_g(expr)
+    while len(expr) and expr[0] in ["+", "*"]:
+        op = expr.pop(0)
+        rhs = parse_g(expr)
+        lhs = ops[op](lhs, rhs)
+    return lhs
+
+
+def parse_infix(input: List[str]) -> int:
+    """
+    Parses the given string in infix notation.
+    """
+    ans = parse_e(input)
+    assert len(input) == 0
+    return ans
+
+
+def tokenize(expr: str) -> List[str]:
+    res = []
+
+    def split_tok(tok: str) -> None:
+        if "(" not in tok and ")" not in tok:
+            res.append(tok)
+        if "(" in tok:
+            res.append("(")
+            split_tok(tok[1:])
+        if ")" in tok:
+            split_tok(tok[:-1])
+            res.append(")")
+
+    for tok in expr.split():
+        split_tok(tok)
+    return res
+
+
+def solve(raw: List[str]) -> int:
+    return sum(parse_infix(tokenize(expr)) for expr in raw)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d18/ex1/input

@@ -0,0 +1,377 @@
+(5 * 7 * 5) * 6 * 5 + 7 + 6 * 4
+(2 + 3 + (2 + 8) * 3 + (7 + 4)) * 3 + 7
+2 + 4 * (2 + 2 * (9 + 2 + 6 + 3 + 6) + 4)
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2020/d18/ex2/ex2.py

@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+
+import sys
+from typing import Callable, Dict, List
+
+"""
+E : T [ * T ]*
+
+T : G [ + G ]*
+
+G : '(' E ')' | CONSTANT
+"""
+
+
+def parse_g(expr: List[str]) -> int:
+    top = expr.pop(0)
+    if top == "(":
+        ans = parse_e(expr)
+        assert expr.pop(0) == ")"
+        return ans
+    return int(top)
+
+
+def parse_t(expr: List[str]) -> int:
+    lhs = parse_g(expr)
+    while len(expr) and expr[0] == "+":
+        expr.pop(0)
+        rhs = parse_g(expr)
+        lhs += rhs
+    return lhs
+
+
+def parse_e(expr: List[str]) -> int:
+    lhs = parse_t(expr)
+    while len(expr) and expr[0] == "*":
+        expr.pop(0)
+        rhs = parse_t(expr)
+        lhs *= rhs
+    return lhs
+
+
+def parse_infix(input: List[str]) -> int:
+    """
+    Parses the given string in infix notation.
+    """
+    ans = parse_e(input)
+    assert len(input) == 0
+    return ans
+
+
+def tokenize(expr: str) -> List[str]:
+    res = []
+
+    def split_tok(tok: str) -> None:
+        if "(" not in tok and ")" not in tok:
+            res.append(tok)
+        if "(" in tok:
+            res.append("(")
+            split_tok(tok[1:])
+        if ")" in tok:
+            split_tok(tok[:-1])
+            res.append(")")
+
+    for tok in expr.split():
+        split_tok(tok)
+    return res
+
+
+def solve(raw: List[str]) -> int:
+    return sum(parse_infix(tokenize(expr)) for expr in raw)
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()

2020/d18/ex2/input

@@ -0,0 +1,377 @@
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2020/d19/ex1/ex1.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python
+
+import itertools
+import re
+import sys
+from typing import Dict, List
+
+
+def parse_rule(raw_rules: List[str]) -> str:
+    parsed: Dict[int, str] = {}
+    rules = {int(num): rule.strip() for num, rule in (i.split(":") for i in raw_rules)}
+
+    for n, r in rules.items():
+        if '"' not in r:
+            continue
+        parsed[n] = r.replace('"', "")
+
+    while 0 not in parsed:
+        for num in parsed:
+            if num not in rules:
+                continue
+            rules.pop(num)
+
+        for num, r in rules.items():
+            nums = list(reversed(sorted(map(int, re.findall("(\\d+)", r)))))
+            if all(n in parsed for n in nums):
+                for n in nums:
+                    r = re.sub(str(n), parsed[n], r)  # Bigger numbers replaced first
+                r = r.replace(" ", "")
+                parsed[num] = "(" + r + ")"
+    return parsed[0]
+
+
+def solve(raw: List[str]) -> int:
+    pattern = re.compile(parse_rule(list(itertools.takewhile(len, raw))))
+
+    return sum(
+        pattern.fullmatch(line) is not None for line in itertools.dropwhile(len, raw)
+    )
+
+
+def main() -> None:
+    input = [line.strip() for line in sys.stdin.readlines()]
+    print(solve(input))
+
+
+if __name__ == "__main__":
+    main()