func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string s;     cin >> s;     stack<char> stk;     int cnt = 0;     for (int i = s.size() - 1; i >= 0; i--) {       if (stk.empty())         stk.push(s[i]);       else {         if (stk.top() == s[i]) {           cnt++;           stk.pop();         } else           stk.push(s[i]);       }     }     cout << (cnt & 1 ?  Yes  :  No ) << endl;     return 0;   }   