func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long INF = 1000000000000000;   int main() {     int t, n;     cin >> t;     for (int i = 0; i < t; i++) {       cin >> n;       string s, t;       if (n & 1) {         if (n == 1)           cout <<  a  <<   n ;         else {           s = string(n / 2,  a ) +  bc  + string(n / 2 - 1,  a );           cout << s <<   n ;         }       } else {         s = string(n / 2,  a ) +  b  + string(n / 2 - 1,  a );         cout << s <<   n ;       }     }   }   