When I start to feed my pigeon, a minute later two more fly by. And a minute later another 3. Then 4, and so on. One portion of food lasts a pigeon for a minute. In case there's not enough food for all the birds, the pigeons that came first, eat first. Pigeons are hungry animals and eat without stopping. If I have N portions of wheat, how many pigeons will be fed with at least one portion of wheat?
Input: A quantity of portions wheat, a positive integer.
Output: The number of fed pigeons, an integer.
Example:
checkio(1) == 1
checkio(2) == 1
checkio(5) == 3
checkio(10) == 6
i don't understand
Created at: Feb. 4, 2014, 10:54 a.m.; Updated at: June 25, 2014, 1:53 p.m.