func_code_string: #include <bits/stdc++.h>   const double PI = 3.141592653589793238460;   using namespace std;   int main() {     long long int t, n, k;     cin >> t;     while (t--) {       cin >> n >> k;       if ((n < k * k))         cout <<  NO  <<   n ;       else if ((k % 2) != (n % 2))         cout <<  NO  <<   n ;       else         cout <<  YES  <<   n ;     }   }   