1238A - Prime Subtraction - CodeForces Solution

#include<bits/stdc++.h>
using namespace std;
const int N= 2e5+10;
int main()
{
 	int t;
 	cin>>t;
 	while(t--)
 	{
  		long long x, y;
  		cin>>x>>y;
  		if(x - y == 1) cout<<"NO"<<endl;
  		else cout<<"YES"<<endl;
 	}
 	return 0;
}