func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string s =  abcdefghijklmnopqrstuvwxyz ;     string s2 =   ;     int n, k;     cin >> n >> k;     for (int i = 0; i < n; i++) s2 += s[i % k];     cout << s2 << endl;     return 0;   }   