func_code_string: #include <bits/stdc++.h>   using namespace std;   string s;   int n, i, k = 0;   int main() {     cin >> s;     for (i = 0; i < s.size(); i++) {       while (s[i] == s[i + 1] && s.size()) {         s.erase(i, 2);         i--;         k++;       }     }     if (k % 2 != 0)       cout <<  YES  << endl;     else if (k % 2 == 0)       cout <<  No  << endl;     return 0;   }   