func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     int n, k;     cin >> n >> k;     vector<string> notes, names(55);     for (int i = 0; i <= n - k; i++) {       string m;       cin >> m;       notes.push_back(m);     }     for (int i = 0; i < 26; i++) {       names[i] = (i +  A );     }     if (n >= 26) {       for (int i = 26; i <= n; i++) {         names[i] = names[i - 26] +  a ;       }     }     for (int i = 0; i <= n - k; i++) {       if (notes[i] ==  NO ) names[i + k - 1] = names[i];     }     for (int i = 0; i < n; i++) {       cout << names[i] <<    ;     }     return 0;   }   