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13 lines
315 B
Python
13 lines
315 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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n = int(raw_input().strip())
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sum=0
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for a in range(3,n):
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if(a%3==0 or a%5==0):
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sum+=a
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print sum
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