29 lines
907 B
Python
29 lines
907 B
Python
from lib import *
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input = read_input(2018, 12)
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lines = input.splitlines()
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state, _, *rules = lines
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state = {i for i, x in enumerate(state.split()[-1]) if x == "#"}
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rules = [x.split()[-1] == "#" for x in sorted(rules, reverse=True)]
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for _ in range(20):
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nums = {k + i - 2 for k in state for i in range(5)}
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state = {k for k in nums if rules[sum(((k + i - 2) in state) * (2 ** (4 - i)) for i in range(5))]}
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print(sum(state))
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state, _, *rules = lines
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state = {i for i, x in enumerate(state.split()[-1]) if x == "#"}
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rules = [x.split()[-1] == "#" for x in sorted(rules, reverse=True)]
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last = None
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for _ in range(200):
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nums = {k + i - 2 for k in state for i in range(5)}
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state = {k for k in nums if rules[sum(((k + i - 2) in state) * (2 ** (4 - i)) for i in range(5))]}
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s = sum(state)
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step = s - last if last is not None else None
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last = s
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print(s + step * (50000000000 - 200))
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