Compare commits
4 commits
1c57181989
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d1194e8c5f
| Author | SHA1 | Date | |
|---|---|---|---|
 Bruno BELANYI
|
d1194e8c5f | ||
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Bruno BELANYI
|
7759412af3 | ||
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Bruno BELANYI
|
4211451deb | ||
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Bruno BELANYI
|
1562f97efc |
147
2022/d24/ex1/ex1.py
Executable file
147
2022/d24/ex1/ex1.py
Executable file
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@ -0,0 +1,147 @@
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#!/usr/bin/env python
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import dataclasses
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import enum
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import sys
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from collections import defaultdict, deque
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from collections.abc import Iterator
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from typing import NamedTuple
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class Point(NamedTuple):
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x: int
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y: int
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def __add__(self, other):
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if not isinstance(other, Point):
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return NotImplemented
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return Point(self.x + other.x, self.y + other.y)
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def __sub__(self, other):
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if not isinstance(other, Point):
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return NotImplemented
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return Point(self.x - other.x, self.y - other.y)
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class Direction(str, enum.Enum):
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UP = "^"
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DOWN = "v"
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LEFT = "<"
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RIGHT = ">"
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def to_delta(self) -> Point:
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match self:
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case Direction.UP:
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return Point(-1, 0)
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case Direction.DOWN:
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return Point(1, 0)
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case Direction.LEFT:
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return Point(0, -1)
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case Direction.RIGHT:
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return Point(0, 1)
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@dataclasses.dataclass
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class ValleyMap:
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start: Point
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goal: Point
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valley_corners: tuple[Point, Point]
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tornadoes: dict[Point, Direction]
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@classmethod
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def from_input(cls, input: list[str]) -> "ValleyMap":
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tornadoes: dict[Point, Direction] = {}
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for x, line in enumerate(input, start=1):
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for y, c in enumerate(line, start=1):
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if c in ("#", "."):
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continue
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tornadoes[Point(x, y)] = Direction(c)
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return cls(
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# Start position is always above the upper left corner of valley
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start=Point(1, 2),
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# Goal position is always under the lower left corner of valley
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goal=Point(len(input), len(input[0]) - 1),
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# Valley is surrounded by walls, except entrance and exit
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valley_corners=(Point(2, 2), Point(len(input) - 1, len(input[0]) - 1)),
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tornadoes=tornadoes,
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)
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def _is_in_valley(self, p: Point) -> bool:
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# Valley also includes start/end
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if p in (self.start, self.goal):
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return True
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# Otherwise, just do a bounds check for inside the walls
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((minx, miny), (maxx, maxy)) = self.valley_corners
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return (minx <= p.x <= maxx) and (miny <= p.y <= maxy)
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def _wrap_tornado(self, p: Point) -> Point:
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if self._is_in_valley(p):
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return p
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x, y = p
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h = self.valley_corners[1].x - self.valley_corners[0].x + 1
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w = self.valley_corners[1].y - self.valley_corners[0].y + 1
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if x == 1:
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x += h
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if y == 1:
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y += w
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if x > self.valley_corners[1].x:
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x -= h
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if y > self.valley_corners[1].y:
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y -= w
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return Point(x, y)
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def navigate(self) -> int:
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TornadoesMap = dict[Point, list[Direction]]
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def move_tornadoes(map: TornadoesMap) -> dict[Point, list[Direction]]:
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res: dict[Point, list[Direction]] = defaultdict(list)
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for p, tornadoes in map.items():
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for t in tornadoes:
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new_pos = self._wrap_tornado(p + t.to_delta())
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res[new_pos].append(t)
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return dict(res)
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def moves(p: Point) -> Iterator[Point]:
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yield p
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for dx, dy in ((-1, 0), (1, 0), (0, -1), (0, 1)):
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yield p + Point(dx, dy)
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# Do a BFS to find the fastest route
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queue: deque[tuple[int, Point]] = deque([(0, self.start)])
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seen: set[tuple[int, Point]] = set()
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tornado_history = [{p: [t] for p, t in self.tornadoes.items()}]
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while queue:
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dist, pos = queue.popleft()
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# If goal found, return total distance
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if pos == self.goal:
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return dist
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# Check that we don't do redundant work
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if (dist, pos) in seen:
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continue
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seen.add((dist, pos))
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if len(tornado_history) <= (dist + 1):
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tornado_history.append(move_tornadoes(tornado_history[-1]))
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for new_pos in moves(pos):
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# Can't move into the walls, but can move in start/end
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if not self._is_in_valley(new_pos):
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continue
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# Can't occupy same space as tornadoes
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if new_pos in tornado_history[dist + 1]:
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continue
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# Enqueue this move to the search space
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queue.append((dist + 1, new_pos))
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assert False # Sanity check
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def solve(input: list[str]) -> int:
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valley = ValleyMap.from_input(input)
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return valley.navigate()
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def main() -> None:
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input = sys.stdin.read().splitlines()
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print(solve(input))
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if __name__ == "__main__":
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main()
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22
2022/d24/ex1/input
Normal file
22
2022/d24/ex1/input
Normal file
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@ -0,0 +1,22 @@
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#.######################################################################################################################################################
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#<v^>^>^^<><^>^^v>vv^v^>>^<>^<v<>v^>>v>v><^..><v<^v<<^v>v>>>>^<v^>>>.v>.v><<v><.^>>^^^>v>>^.<v>>vv<<.<<v<<vv^<^>^v>^v<>^^.^.<<<v^>>^<^>.>vvv><^<^>v.^<>#
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#<..v<<^^.^^v<<>>v<vv.><v<<<>>>.<>>^vv^^v>v^>><v<.<<v.v^^>>v^vv<<><>>v.>.v>.<..v>^^>^<<vv>><>vv>>v>.><.<<vv<v^..v<v<v^v>v^vv<v<v^.^<v<.<<><>vvvvv^<^v>.#
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#<>>^<v>v^v>v>.^v<>v<v^<<<.^^<.>vv>>^<<^>>v<v.>^^^.<<<.>>v.>.v^<v><v>.>>>^><>v>>v^<.v^<.vv^>^v<><>>v^^<^>..<v><<^<<<^<v><^>^<>v>vvv>>^<<>><><<^^.<<v>v>#
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#>.<<<^..>><>v>^vv>vv<v..^>^^>>.><^<v.>>><^.^<>^v>.<^<>>>^>>^><^><^.^>.><><><^>^>>^>>>^<.>>^<^>vv<^v^><vv^v>.>^>>vv.^<>>^>>>><>.^.>v<.^<>v^>v>^^>>v<><>#
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#>>v<^v^<^^><>><>.>v^v>^v.>v^.>>.><><<>^><<>^>^v>v^^^>>^v<<<>v<vv>v>>v<^^^<<<<v^vv><>v<^>>.<v.^^>^v<v<v.v..v<^^>>><.v^<.>>vv>v><><.^^^v><.<<v^>^>>><v><#
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#>>vv<^vv<<v<^v^.><>^<v<>v<^v.>>v<><>.>^.^....<<^<.<v>><v>^^^<><>.>^<<v^<>>>^^><v><>>v^v<v<v^<.^<v>v^<>v^<vv^.<^v>^^^v.<><^><^v<<.v>>><>>><.v>v>>^.^>^>#
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#<v<>>^v>v^vv^.^<<<^><>v^<.>>^^^<^<^>.>>^<<.^>><<<v^v>.>^^.vv>.v<v^>v><^^.<<<v^>v..<^<.vvv<.<v..<.>.v>.>>^v<^^<^v^>^.<<^^.^^<><v^^v<^^^v>v<<<<v<<>v>><>#
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#<^>>^>><<>v.v>.vvv><^><v<^v<>v..<<<>>><<vv>^v><^>..<^^v>.<<<v><v^^vv^^>>.v..^<.^v<v>v.><vv>^><>vv><<>v^>v>><^^>^>><^>.>^^<<><><^.>^v<>v^.>v><>>.v^..v>#
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#<.<<<^><><^<<^>><..>^<<<>^.<>>v..v^^<<<.><.^.<^>^vvv^^^^>v>^<v>>>>>v<><>v.<>>^.<>v^<.^vv>v^<v>.><v<^.><<^vv<>><>v><^v>>^^^.v^v>v>^v^>.v<<^>.^v<v>^>vv<#
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#<<>^^.^>v<vvvv<<^v<v<<<v>.<>>^>^.<<^>^><<>v^.><<<.^^^<<^><<^^>.>vv<v<>>^>^^v<.^>.<v<>^>^<^>^.<>^v.^^^.v><v>^.^v^<<<><<>v.>>>>^<v>..v>^^v<v<^>v<v.>^v>>#
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#<^.<^^><>^^^<<>>^>.^^^<^<^<^^<^v.^^v>^v<>.^v^^<<..v<^<>>^<..<^.>><v<>^>.^v.>>v^.v..v.<<vv^>^vvv^v<vv<^.^><><><<^v^v.^^<<>^vv>^^>v>^v<<^>^<vvv.><^.^<v>#
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#<^^v^v>^<^><>v><.><v>^>^<vv<>..v^>^v^>^><>v<^v^<<v<<<<v<v..^^^<><v>v>^vv<^v.<><>vv>>>>v<>^vv<^v<>^^.v>>^^<<.<^<v<>>^>>vv>vv^<v^^>>^<v<.v<v>v<<>.>^>^v>#
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#<<>>>.<<>^>>v>^<^v>><<^v<><<.^<^<>>><^v>>v>^<^vv.<^^^.vv^<<<>^^>v>^v.>^^v>v.<>vvv><<v>v>^v.<v^<>^>vv<><vv<v^<><vv.>^>.>.v^v.v^vv^<.<>.>vv>^>v<v<v>^<.<#
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#>^<^<v<^^<^^v><<.<<..>>.>^^v>>v>^^>^^>>>v>v^<v^><>v>><v^<v>^>vvv>><>>vv>.>^.^<>.><v.>^.v<><v<^v><v.v<v<..^>^^<^v^>>.>v.v<><<<v><>^<<^>^>^>^.vv..<>v<^>#
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#..v<<^v^^>^>^<^<vvv>v<v^^v^.<<vvv.v.v^v>^v^^v>><^><<^v.<vv<><.vv^v<<>^v<<^v^v^^.>^>v<^^v...>>vv.<^v>v^<<^<vv>v^>v<^>v<vv>^<>.>v^^^^.^<>^^.^><.<.>>.><.#
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#<vv>v^<v^.vv<<.>v<<^v^>>^vv.v>>v>.vv^>>vv.>v>>>^.>>><.^.^<><>^vv<^<>><<vv<<v>^v^>>.<v^<v^<^^^<><>v<>v<....^^><.<^^>v^v>v<v<.><<>>^<>.v.<.vv<.>^.^v^>.>#
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#<<v<^vv^>v>>^>.>^^^<.>>^<><>>.>^v^<.v^^.^<<^>^.^v^^v<v<><>>.>.<>.^.v>.<v>^><^>v>v<>.^v<><.<<.><<^v<><><^>v^...v<<^^<^>v>^^vv^^vvv>^>v>>.>>v^^.vv>^<v<>#
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#>v<>^v><>^>>><<^.^v<<v^>v<>>>.^v><^v<<>v<^^.<.><><v>^<><.v<v<<^^^>>><^>^>>.<>vvvv.^^v<<>^<>>><<v^v><v>>>^v.<^>.^>><v><<><vv.v<vv<v^^>v<.<^<^>v^^>v^.><#
|
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#><v>vv^<^.<^>v^v^<><><vvv^v>v<>>v^<>^>>>^v^<v>>v<<^.^<v^vvv^^<><vvv.<vv^.>>v^<v.^vv><vv<>v^<^<^^>^^^vv^.<><>><^v.<^<.<>.>^<^<^<>v<^.<v<v<v>^vv><.v<^>>#
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#>v^.v>^v<>>v^>>>^^^^>.v<<^>^v>.^^>^>v^<^v^^<^^v>v>.v^<v>^v><^^.><^^>>v>v^v<v.<^>><>vv><v^v^><>^vvv>>v>>^v^^<^>>v^<^vv^<^^^^vv<><vv<.v^><v>^^>v^v<><<<<#
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######################################################################################################################################################.#
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164
2022/d24/ex2/ex2.py
Executable file
164
2022/d24/ex2/ex2.py
Executable file
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@ -0,0 +1,164 @@
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#!/usr/bin/env python
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import dataclasses
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import enum
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import sys
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from collections import defaultdict, deque
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from collections.abc import Iterator
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from typing import NamedTuple
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class Point(NamedTuple):
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x: int
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y: int
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def __add__(self, other):
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if not isinstance(other, Point):
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return NotImplemented
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return Point(self.x + other.x, self.y + other.y)
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def __sub__(self, other):
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if not isinstance(other, Point):
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return NotImplemented
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return Point(self.x - other.x, self.y - other.y)
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class Direction(str, enum.Enum):
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UP = "^"
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DOWN = "v"
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LEFT = "<"
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RIGHT = ">"
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def to_delta(self) -> Point:
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match self:
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case Direction.UP:
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return Point(-1, 0)
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case Direction.DOWN:
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return Point(1, 0)
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case Direction.LEFT:
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return Point(0, -1)
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case Direction.RIGHT:
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return Point(0, 1)
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@dataclasses.dataclass
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class ValleyMap:
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start: Point
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goal: Point
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valley_corners: tuple[Point, Point]
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tornadoes: dict[Point, Direction]
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@classmethod
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def from_input(cls, input: list[str]) -> "ValleyMap":
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tornadoes: dict[Point, Direction] = {}
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for x, line in enumerate(input, start=1):
|
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for y, c in enumerate(line, start=1):
|
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if c in ("#", "."):
|
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continue
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tornadoes[Point(x, y)] = Direction(c)
|
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return cls(
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# Start position is always above the upper left corner of valley
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start=Point(1, 2),
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# Goal position is always under the lower left corner of valley
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goal=Point(len(input), len(input[0]) - 1),
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# Valley is surrounded by walls, except entrance and exit
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valley_corners=(Point(2, 2), Point(len(input) - 1, len(input[0]) - 1)),
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tornadoes=tornadoes,
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)
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|
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def _is_in_valley(self, p: Point) -> bool:
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# Valley also includes start/end
|
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if p in (self.start, self.goal):
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return True
|
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# Otherwise, just do a bounds check for inside the walls
|
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((minx, miny), (maxx, maxy)) = self.valley_corners
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return (minx <= p.x <= maxx) and (miny <= p.y <= maxy)
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def _wrap_tornado(self, p: Point) -> Point:
|
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if self._is_in_valley(p):
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return p
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x, y = p
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h = self.valley_corners[1].x - self.valley_corners[0].x + 1
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w = self.valley_corners[1].y - self.valley_corners[0].y + 1
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if x == 1:
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x += h
|
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if y == 1:
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y += w
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if x > self.valley_corners[1].x:
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x -= h
|
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if y > self.valley_corners[1].y:
|
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y -= w
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return Point(x, y)
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|
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def navigate(self) -> int:
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TornadoesMap = dict[Point, list[Direction]]
|
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|
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def move_tornadoes(map: TornadoesMap) -> dict[Point, list[Direction]]:
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res: dict[Point, list[Direction]] = defaultdict(list)
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for p, tornadoes in map.items():
|
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for t in tornadoes:
|
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new_pos = self._wrap_tornado(p + t.to_delta())
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res[new_pos].append(t)
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return dict(res)
|
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|
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def moves(p: Point) -> Iterator[Point]:
|
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yield p
|
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for dx, dy in ((-1, 0), (1, 0), (0, -1), (0, 1)):
|
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yield p + Point(dx, dy)
|
||||
|
||||
def bfs(
|
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start: Point, goal: Point, tornadoes: TornadoesMap
|
||||
) -> tuple[int, TornadoesMap]:
|
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# Do a BFS to find the fastest route
|
||||
queue: deque[tuple[int, Point]] = deque([(0, start)])
|
||||
seen: set[tuple[int, Point]] = set()
|
||||
tornado_history = [tornadoes]
|
||||
while queue:
|
||||
dist, pos = queue.popleft()
|
||||
# If goal found, return total distance
|
||||
if pos == goal:
|
||||
return dist, tornado_history[dist]
|
||||
# Check that we don't do redundant work
|
||||
if (dist, pos) in seen:
|
||||
continue
|
||||
seen.add((dist, pos))
|
||||
if len(tornado_history) <= (dist + 1):
|
||||
tornado_history.append(move_tornadoes(tornado_history[-1]))
|
||||
for new_pos in moves(pos):
|
||||
# Can't move into the walls, but can move in start/end
|
||||
if not self._is_in_valley(new_pos):
|
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continue
|
||||
# Can't occupy same space as tornadoes
|
||||
if new_pos in tornado_history[dist + 1]:
|
||||
continue
|
||||
# Enqueue this move to the search space
|
||||
queue.append((dist + 1, new_pos))
|
||||
assert False # Sanity check
|
||||
|
||||
tornadoes = {p: [t] for p, t in self.tornadoes.items()}
|
||||
total = 0
|
||||
for start, end in (
|
||||
# First travel
|
||||
(self.start, self.goal),
|
||||
# Back for snacks
|
||||
(self.goal, self.start),
|
||||
# Second travel
|
||||
(self.start, self.goal),
|
||||
):
|
||||
dist, tornadoes = bfs(start, end, tornadoes)
|
||||
total += dist
|
||||
return total
|
||||
|
||||
|
||||
def solve(input: list[str]) -> int:
|
||||
valley = ValleyMap.from_input(input)
|
||||
return valley.navigate()
|
||||
|
||||
|
||||
def main() -> None:
|
||||
input = sys.stdin.read().splitlines()
|
||||
print(solve(input))
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
main()
|
||||
22
2022/d24/ex2/input
Normal file
22
2022/d24/ex2/input
Normal file
|
|
@ -0,0 +1,22 @@
|
|||
#.######################################################################################################################################################
|
||||
#<v^>^>^^<><^>^^v>vv^v^>>^<>^<v<>v^>>v>v><^..><v<^v<<^v>v>>>>^<v^>>>.v>.v><<v><.^>>^^^>v>>^.<v>>vv<<.<<v<<vv^<^>^v>^v<>^^.^.<<<v^>>^<^>.>vvv><^<^>v.^<>#
|
||||
#<..v<<^^.^^v<<>>v<vv.><v<<<>>>.<>>^vv^^v>v^>><v<.<<v.v^^>>v^vv<<><>>v.>.v>.<..v>^^>^<<vv>><>vv>>v>.><.<<vv<v^..v<v<v^v>v^vv<v<v^.^<v<.<<><>vvvvv^<^v>.#
|
||||
#<>>^<v>v^v>v>.^v<>v<v^<<<.^^<.>vv>>^<<^>>v<v.>^^^.<<<.>>v.>.v^<v><v>.>>>^><>v>>v^<.v^<.vv^>^v<><>>v^^<^>..<v><<^<<<^<v><^>^<>v>vvv>>^<<>><><<^^.<<v>v>#
|
||||
#>.<<<^..>><>v>^vv>vv<v..^>^^>>.><^<v.>>><^.^<>^v>.<^<>>>^>>^><^><^.^>.><><><^>^>>^>>>^<.>>^<^>vv<^v^><vv^v>.>^>>vv.^<>>^>>>><>.^.>v<.^<>v^>v>^^>>v<><>#
|
||||
#>>v<^v^<^^><>><>.>v^v>^v.>v^.>>.><><<>^><<>^>^v>v^^^>>^v<<<>v<vv>v>>v<^^^<<<<v^vv><>v<^>>.<v.^^>^v<v<v.v..v<^^>>><.v^<.>>vv>v><><.^^^v><.<<v^>^>>><v><#
|
||||
#>>vv<^vv<<v<^v^.><>^<v<>v<^v.>>v<><>.>^.^....<<^<.<v>><v>^^^<><>.>^<<v^<>>>^^><v><>>v^v<v<v^<.^<v>v^<>v^<vv^.<^v>^^^v.<><^><^v<<.v>>><>>><.v>v>>^.^>^>#
|
||||
#<v<>>^v>v^vv^.^<<<^><>v^<.>>^^^<^<^>.>>^<<.^>><<<v^v>.>^^.vv>.v<v^>v><^^.<<<v^>v..<^<.vvv<.<v..<.>.v>.>>^v<^^<^v^>^.<<^^.^^<><v^^v<^^^v>v<<<<v<<>v>><>#
|
||||
#<^>>^>><<>v.v>.vvv><^><v<^v<>v..<<<>>><<vv>^v><^>..<^^v>.<<<v><v^^vv^^>>.v..^<.^v<v>v.><vv>^><>vv><<>v^>v>><^^>^>><^>.>^^<<><><^.>^v<>v^.>v><>>.v^..v>#
|
||||
#<.<<<^><><^<<^>><..>^<<<>^.<>>v..v^^<<<.><.^.<^>^vvv^^^^>v>^<v>>>>>v<><>v.<>>^.<>v^<.^vv>v^<v>.><v<^.><<^vv<>><>v><^v>>^^^.v^v>v>^v^>.v<<^>.^v<v>^>vv<#
|
||||
#<<>^^.^>v<vvvv<<^v<v<<<v>.<>>^>^.<<^>^><<>v^.><<<.^^^<<^><<^^>.>vv<v<>>^>^^v<.^>.<v<>^>^<^>^.<>^v.^^^.v><v>^.^v^<<<><<>v.>>>>^<v>..v>^^v<v<^>v<v.>^v>>#
|
||||
#<^.<^^><>^^^<<>>^>.^^^<^<^<^^<^v.^^v>^v<>.^v^^<<..v<^<>>^<..<^.>><v<>^>.^v.>>v^.v..v.<<vv^>^vvv^v<vv<^.^><><><<^v^v.^^<<>^vv>^^>v>^v<<^>^<vvv.><^.^<v>#
|
||||
#<^^v^v>^<^><>v><.><v>^>^<vv<>..v^>^v^>^><>v<^v^<<v<<<<v<v..^^^<><v>v>^vv<^v.<><>vv>>>>v<>^vv<^v<>^^.v>>^^<<.<^<v<>>^>>vv>vv^<v^^>>^<v<.v<v>v<<>.>^>^v>#
|
||||
#<<>>>.<<>^>>v>^<^v>><<^v<><<.^<^<>>><^v>>v>^<^vv.<^^^.vv^<<<>^^>v>^v.>^^v>v.<>vvv><<v>v>^v.<v^<>^>vv<><vv<v^<><vv.>^>.>.v^v.v^vv^<.<>.>vv>^>v<v<v>^<.<#
|
||||
#>^<^<v<^^<^^v><<.<<..>>.>^^v>>v>^^>^^>>>v>v^<v^><>v>><v^<v>^>vvv>><>>vv>.>^.^<>.><v.>^.v<><v<^v><v.v<v<..^>^^<^v^>>.>v.v<><<<v><>^<<^>^>^>^.vv..<>v<^>#
|
||||
#..v<<^v^^>^>^<^<vvv>v<v^^v^.<<vvv.v.v^v>^v^^v>><^><<^v.<vv<><.vv^v<<>^v<<^v^v^^.>^>v<^^v...>>vv.<^v>v^<<^<vv>v^>v<^>v<vv>^<>.>v^^^^.^<>^^.^><.<.>>.><.#
|
||||
#<vv>v^<v^.vv<<.>v<<^v^>>^vv.v>>v>.vv^>>vv.>v>>>^.>>><.^.^<><>^vv<^<>><<vv<<v>^v^>>.<v^<v^<^^^<><>v<>v<....^^><.<^^>v^v>v<v<.><<>>^<>.v.<.vv<.>^.^v^>.>#
|
||||
#<<v<^vv^>v>>^>.>^^^<.>>^<><>>.>^v^<.v^^.^<<^>^.^v^^v<v<><>>.>.<>.^.v>.<v>^><^>v>v<>.^v<><.<<.><<^v<><><^>v^...v<<^^<^>v>^^vv^^vvv>^>v>>.>>v^^.vv>^<v<>#
|
||||
#>v<>^v><>^>>><<^.^v<<v^>v<>>>.^v><^v<<>v<^^.<.><><v>^<><.v<v<<^^^>>><^>^>>.<>vvvv.^^v<<>^<>>><<v^v><v>>>^v.<^>.^>><v><<><vv.v<vv<v^^>v<.<^<^>v^^>v^.><#
|
||||
#><v>vv^<^.<^>v^v^<><><vvv^v>v<>>v^<>^>>>^v^<v>>v<<^.^<v^vvv^^<><vvv.<vv^.>>v^<v.^vv><vv<>v^<^<^^>^^^vv^.<><>><^v.<^<.<>.>^<^<^<>v<^.<v<v<v>^vv><.v<^>>#
|
||||
#>v^.v>^v<>>v^>>>^^^^>.v<<^>^v>.^^>^>v^<^v^^<^^v>v>.v^<v>^v><^^.><^^>>v>v^v<v.<^>><>vv><v^v^><>^vvv>>v>>^v^^<^>>v^<^vv^<^^^^vv<><vv<.v^><v>^^>v^v<><<<<#
|
||||
######################################################################################################################################################.#
|
||||
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Reference in a new issue