func_code_string: #include <bits/stdc++.h>   using namespace std;   int n;   char a[105][3];   int main() {     scanf( %s%d , a[0], &n);     for (int i = 1; i <= n; ++i) {       scanf( %s , a[i]);       if (a[i][0] == a[0][0] && a[i][1] == a[0][1]) {         printf( YES n );         return 0;       }     }     for (int i = 1; i <= n; ++i)       for (int j = 1; j <= n; ++j)         if ((a[i][1] == a[0][0] && a[j][0] == a[0][1])) {           printf( YES n );           return 0;         }     printf( NO n );     return 0;   }   