Score : 100 points
We have two bottles for holding water.
Bottle 1 can hold up to A milliliters of water, and now it contains B milliliters of water.
Bottle 2 contains C milliliters of water.
We will transfer water from Bottle 2 to Bottle 1 as much as possible.
How much amount of water will remain in Bottle 2?
Input is given from Standard Input in the following format:
A B C
Print the integer representing the amount of water, in milliliters, that will remain in Bottle 2.
6 4 3
1
We will transfer two milliliters of water from Bottle 2 to Bottle 1, and one milliliter of water will remain in Bottle 2.
8 3 9
4
12 3 7
0