func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     long long x, y;     cin >> t;     for (int i = 1; i <= t; i++) {       cin >> x >> y;       if ((x - y) >= 2)         cout <<  YES  << endl;       else         cout <<  NO  << endl;     }   }   