22 lines
551 B
Python
Executable File
22 lines
551 B
Python
Executable File
#!/usr/bin/env python
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import itertools
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import sys
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from typing import Iterable
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def product(nums: Iterable[int]) -> int:
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"""
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Returns the product of all elements in 'nums'
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"""
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x = 1
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for num in nums:
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x *= num
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return x
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def find_summing(arity: int, nums: Iterable[int]) -> int:
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return product(next(filter(lambda xs: sum(xs) == 2020, itertools.permutations(nums, r=arity))))
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if __name__ == '__main__':
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nums = [int(n) for n in sys.stdin.readlines()]
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print(find_summing(2, nums))
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print(find_summing(3, nums))
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