func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long n;     cin >> n;     string s;     cin >> s;     long long open = count(s.begin(), s.end(),  ( );     if (open != n - open) {       cout << -1 <<   n ;       return 0;     }     long long count = 0, ans = 0;     stack<char> st;     for (char ch : s) {       if (ch ==  ( ) {         if (count == 0) {           st.push(ch);         } else {           count++;           ans++;         }       } else {         if (st.empty()) {           count--;           ans++;         } else if (st.top() ==  ( ) {           st.pop();         }       }     }     cout << ans <<   n ;   }   