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33 lines
635 B
Python
33 lines
635 B
Python
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"""
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Problem Statement:
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If we list all the natural numbers below 10 that are multiples of 3 or 5,
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we get 3,5,6 and 9. The sum of these multiples is 23.
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Find the sum of all the multiples of 3 or 5 below N.
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"""
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def solution(n):
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"""Returns the sum of all the multiples of 3 or 5 below n.
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>>> solution(3)
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0
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>>> solution(4)
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3
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>>> solution(10)
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23
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>>> solution(600)
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83700
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"""
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result = 0
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for i in range(n):
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if i % 3 == 0:
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result += i
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elif i % 5 == 0:
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result += i
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return result
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if __name__ == "__main__":
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print(solution(int(input().strip())))
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