15 lines
302 B
Python
15 lines
302 B
Python
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from functools import reduce
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def product(p, q):
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multi = 0
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while True:
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q.pop(0)
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if not q:
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break
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multi += reduce(lambda x, y: x + y[0] * y[1], zip(p, q), 0)
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return multi
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limit = 10000 + 1
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print(2 * product(list(range(1, limit)), list(range(1, limit))))
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