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First solution in Clear category for Feed Pigeons by c555
def checkio(number):
i = 0
c = 0
while True:
i += 1
c += i
number -= c
if (number <= 0):
c += max(number, -i)
break
return c
print('\n\n\n')
a = checkio(5)
print(a)
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert checkio(1) == 1, "1st example"
assert checkio(2) == 1, "2nd example"
assert checkio(5) == 3, "3rd example"
assert checkio(10) == 6, "4th example"
Nov. 5, 2014