func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string p;     cin >> p;     int n;     cin >> n;     bool a = false, b = false;     while (n--) {       string s;       cin >> s;       if (s == p) {         a = true;         b = true;       }       if (s[0] == p[1]) a = true;       if (s[1] == p[0]) b = true;     }     if (a && b)       cout <<  YES ;     else       cout <<  NO ;     return 0;   }   