46 lines
1,007 B
Python
Executable file
46 lines
1,007 B
Python
Executable file
#!/usr/bin/env python
|
|
|
|
import itertools
|
|
import sys
|
|
from collections import Counter
|
|
from dataclasses import dataclass
|
|
from typing import Iterator, List, TypeVar
|
|
|
|
T = TypeVar("T")
|
|
|
|
|
|
def nth(iterable: Iterator[T], n: int) -> T:
|
|
return next(itertools.islice(iterable, n, None))
|
|
|
|
|
|
def solve(input: List[str]) -> int:
|
|
fish = [0] * 9
|
|
for n, count in Counter(map(int, input[0].split(","))).items():
|
|
fish[n] = count
|
|
|
|
def step(fish: List[int]) -> List[int]:
|
|
# Count how many clones happen
|
|
new_fish = fish[0]
|
|
|
|
# Do the next cycle
|
|
fish[0:-1] = fish[1:]
|
|
fish[6] += new_fish
|
|
fish[8] = new_fish # Override number of new fish
|
|
|
|
return fish
|
|
|
|
def iter(fish: List[int]) -> Iterator[List[int]]:
|
|
while True:
|
|
yield (fish := step(fish))
|
|
|
|
return sum(nth(iter(fish), 256 - 1))
|
|
|
|
|
|
def main() -> None:
|
|
input = [line.strip() for line in sys.stdin.readlines()]
|
|
print(solve(input))
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|