Python/project_euler/problem_01/sol1.py

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"""
2018-10-19 12:48:28 +00:00
Problem Statement:
If we list all the natural numbers below 10 that are multiples of 3 or 5,
we get 3,5,6 and 9. The sum of these multiples is 23.
Find the sum of all the multiples of 3 or 5 below N.
"""
2019-10-05 05:14:13 +00:00
def solution(n):
"""Returns the sum of all the multiples of 3 or 5 below n.
>>> solution(3)
0
>>> solution(4)
3
>>> solution(10)
23
>>> solution(600)
83700
>>> solution(-7)
0
"""
return sum([e for e in range(3, n) if e % 3 == 0 or e % 5 == 0])
if __name__ == "__main__":
print(solution(int(input().strip())))