func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string name;     int counter = 0;     cin >> name;     for (int i = 0; i < name.length() / 2; i++) {       if (name[i] != name[name.length() - 1 - i]) counter++;     }     if (name.length() % 2 == 0) {       if (counter == 1)         cout <<  YES n ;       else         cout <<  NO n ;     } else {       if (counter == 1 || counter == 0)         cout <<  YES n ;       else         cout <<  NO n ;     }     return 0;   }   