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First solution in Clear category for Feed Pigeons by yukirin
def checkio(number, birds=1, n=1):
while number >= birds:
n += 1
birds += (n * (n + 1)) / 2
return (n - 1) * n / 2 + (number - (birds - n) if 0 < number - (birds - n) else 0)
if __name__ == '__main__':
assert checkio(1) == 1, "1st example"
assert checkio(2) == 1, "2nd example"
assert checkio(5) == 3, "3rd example"
assert checkio(10) == 6, "4th example"
April 7, 2015
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