func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string a;     int n, m;     cin >> a >> n;     m = a.size();     string ans =   ;     while (n--) {       string b;       cin >> b;       if (b.substr(0, 0 + m) == a) {         if (ans ==   )           ans = b;         else if (b < ans)           ans = b;       }     }     if (ans !=   )       cout << ans;     else       cout << a;   }   