#!/usr/bin/env python3

"""
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 1000.
"""

thing = []

for urmom in range(1,1000):
    if urmom % 5 == 0 or urmom % 3 == 0:
        thing.append(urmom)

print(sum(thing))


print sumthing pr1