Help me in solving CHAIRS_ problem

My issue

how to print 0 by substracting 50 - 100

My code

#include <iostream>
using namespace std;

int main() {
	// your code goes here
	return 0;

Problem Link: CHAIRS_ Problem - CodeChef

Just put if condition to check the diff first if its positive then print the diff else print 0;

/* package codechef; // don't place package name! */

import java.util.*;
import java.lang.*;

/* Name of the class has to be "Main" only if the class is public. */
class Codechef
	public static void main (String[] args) throws java.lang.Exception
		Scanner sc=new Scanner(;
		int T=sc.nextInt();
		for(int i=0;i<T;i++)
		    int X=sc.nextInt();
		    int Y=sc.nextInt();