func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     std::string data;     cin >> data;     long long int counter = 0;     char ch;     for (int i = 0; i < data.length(); i++) {       if (data[i] ==  0 )         counter++;       else         counter = 0;     }     std::string to_join;     while (counter != 0) {       counter--;       data =  0  + data;     }     int flag = 0;     for (int i = 0; i < data.length() / 2; i++) {       if (data[i] != data[data.length() - i - 1]) {         flag = 1;         break;       }     }     if (flag)       cout <<  NO ;     else       cout <<  YES ;     return 0;   }   