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.io.*;
import java.util.*;

public class Main
{
	public static void main(String []args)throws IOException
	{
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		
		int n=Integer.parseInt(br.readLine());
		String []s=br.readLine().split(" ");
		
		int a[]=new int[n];
		
		for(int i=0;i<n;i++)
			a[i]=Integer.parseInt(s[i]);
					
		boolean flag=true;
		
		for(int i=n-2;i>=0;i--)
		{
			if(a[i] == (a[i+1]-1))
				a[i]--;	
		}
		
		for(int i=1;i<n;i++)
		{
			if(a[i]<a[i-1])
			{
				flag=false;
				break;
			}
		}
		
		if(flag == true)
			System.out.println("Yes");	
		else
			System.out.println("No");		
	}
}