advent-of-code/2020/d08/ex1/ex1.py

52 lines
892 B
Python
Executable file

#!/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()