Problem:
Score : 100 points

Problem Statement

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?

Constraints

All values in input are integers.

1 \leq B \leq A \leq 20

1 \leq C \leq 20

Input

Input is given from Standard Input in the following format:

A B C

Output

Print the integer representing the amount of water, in milliliters, that will remain in Bottle 2.

Sample Input 1

6 4 3

Sample Output 1

1

We will transfer two milliliters of water from Bottle 2 to Bottle 1, and one milliliter of water will remain in Bottle 2.

Sample Input 2

8 3 9

Sample Output 2

4

Sample Input 3

12 3 7

Sample Output 3

0

Solution in Java8 (OpenJDK 1.8.0) (judge verdict: Runtime Error)

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
	    String anser="Yes";

        Scanner s = new Scanner(System.in);
	    int N = s.nextInt();
	    int[] H = new int[N];
	    for(int i=0; i<N; i++) {
	    	H[i] = s.nextInt();
	    }
	    
	    
	    for(int i=0; i<N-1; i++) {
	    	if(H[i]-H[i+1] > 1) {
	    		anser="No"; break;}
	    	if(H[i]-H[i+1] == 1) { 
	    		if(i != 0 && H[i-1]>=H[i] ) {anser="No"; break;}
	    		
	    	
	    	
	    	
	    		
	    	} 
	    	
	    }

		System.out.println(anser);
	}
}