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.*;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int h ;
    int[] a = new int[n];

    for(int i=0; i<n; i++){
      h = sc.nextInt();
      a[i] = h ;

    }
    //System.out.println(list);
    if(n==0){
      System.out.println("No");
    }else{
      for(int j=0; j<n-1; j++){
        if(a[j]>a[j+1]){
          a[j] = a[j]-1;
          if(j==0 && a[j]>a[j+1]){
            System.out.println("No");
            break ;
          }
          if(a[j-1]>a[j] || a[j]>a[j+1]){
            System.out.println("No");
            break ;
          }
        }
        //System.out.println(list);
      }
    System.out.println("Yes");
    }
  }
}