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46 lines
989 B
Python
46 lines
989 B
Python
"""
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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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xmulti = []
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zmulti = []
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z = 3
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x = 5
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temp = 1
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while True:
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result = z * temp
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if result < n:
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zmulti.append(result)
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temp += 1
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else:
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temp = 1
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break
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while True:
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result = x * temp
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if result < n:
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xmulti.append(result)
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temp += 1
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else:
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break
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collection = list(set(xmulti + zmulti))
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return sum(collection)
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if __name__ == "__main__":
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print(solution(int(input().strip())))
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