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50 lines
1.3 KiB
50 lines
1.3 KiB
import sys
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import typing
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def main() -> int:
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inputs = [int(s) for s in sys.stdin.read().split()]
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for i, j in _find_2020_pairs(inputs):
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print(f"pair: {i} * {j} == {i * j}")
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for i, j, k in _find_2020_triplets(inputs):
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print(f"triplet: {i} * {j} * {k} == {i * j * k}")
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return 0
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def _find_2020_pairs(
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inputs: typing.List[int],
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) -> typing.Generator[typing.Tuple[int, ...], None, None]:
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found = []
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for i, in0 in enumerate(inputs):
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for j, in1 in enumerate(inputs):
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if i == j:
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continue
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if in0 + in1 == 2020:
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to_yield = tuple(sorted([in0, in1]))
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if to_yield not in found:
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yield to_yield
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found.append(to_yield)
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def _find_2020_triplets(
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inputs: typing.List[int],
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) -> typing.Generator[typing.Tuple[int, ...], None, None]:
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found = []
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for i, in0 in enumerate(inputs):
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for j, in1 in enumerate(inputs):
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for k, in2 in enumerate(inputs):
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if i == j or i == k:
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continue
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if in0 + in1 + in2 == 2020:
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to_yield = tuple(sorted([in0, in1, in2]))
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if to_yield not in found:
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yield to_yield
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found.append(to_yield)
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if __name__ == "__main__":
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sys.exit(main())
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