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

@naahebd25
Just put if condition to check the diff first if its positive then print the diff else print 0;