30 lines
550 B
Python
30 lines
550 B
Python
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#!/usr/bin/env python
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import sys
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from typing import List
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def solve(input: List[int]) -> int:
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gamma, epsilon = 0, 0
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bit = 1
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while any(map(bool, input)):
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num_bits = sum(n % 2 for n in input)
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if num_bits >= len(input) / 2:
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gamma += bit
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else:
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epsilon += bit
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input = [n // 2 for n in input]
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bit *= 2
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return gamma * epsilon
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def main() -> None:
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input = [int(line, 2) 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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