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