func_code_string: #include <bits/stdc++.h>   using namespace std;   stack<char> s;   char c;   int now = 1;   int main() {     while (cin >> c) {       if (s.empty()) {         s.push(c);       } else {         if (s.top() == c) {           s.pop();           now = 3 - now;         } else {           s.push(c);         }       }     }     if (now == 2) {       cout <<  Yes n ;     } else {       cout <<  No n ;     }     return 0;   }   