69 lines
1.7 KiB
Python
69 lines
1.7 KiB
Python
import matrix
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import shared
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from dataclasses import dataclass
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from functools import reduce # Valid in Python 2.6+, required in Python 3
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import operator
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@dataclass
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class Game:
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duration: int
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highscore: int
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# @shared.profile
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def part1(rows):
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times = [int(r) for r in rows[0].split(":")[1].split(" ") if r]
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distances = [int(r) for r in rows[1].split(":")[1].split(" ") if r]
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ways = []
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for game in [Game(*g) for g in zip(times, distances)]:
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ways.append(calculate(game))
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print(reduce(operator.mul, ways, 1))
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# @shared.profile
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def part2(rows):
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times = [int("".join([r for r in rows[0].split(":")[1].split(" ") if r]))]
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distances = [int("".join([r for r in rows[1].split(":")[1].split(" ") if r]))]
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ways = []
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for game in [Game(*g) for g in zip(times, distances)]:
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ways.append(calculate(game))
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print(reduce(operator.mul, ways, 1))
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def calculate(game):
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starting_win = None
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for held in range(game.duration+1):
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starting_win = held
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remaining = game.duration - held
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score = held * remaining
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if score > game.highscore:
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break
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ending_win = None
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for held in reversed(range(game.duration+1)):
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ending_win = held
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remaining = game.duration - held
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score = held * remaining
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if score > game.highscore:
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break
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print(game, starting_win, ending_win)
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return ending_win+1-starting_win
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def main():
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rows = [row for row in shared.load_rows(6)]
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with shared.elapsed_timer() as elapsed:
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part1(rows)
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print("🕒", elapsed())
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rows = [row for row in shared.load_rows(6,True)]
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with shared.elapsed_timer() as elapsed:
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part2(rows)
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print("🕒", elapsed())
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if __name__ == "__main__":
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main()
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