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
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
12 3 7