func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(0);     cout.tie(0);     ;     long long int n;     cin >> n;     string s;     cin >> s;     vector<long long int> v(n + 1, 0);     for (long long int i = 1; i <= n; i++) {       if (s[i - 1] ==  ( )         v[i] = v[i - 1] + 1;       else         v[i] = v[i - 1] - 1;     }     if (v[n] != 0) {       cout <<  -1  <<   n ;       return 0;     }     long long int ans = 0;     long long int temp = 0;     for (long long int i = 1; i <= n; i++) {       if (v[i] < 0) {         temp++;       } else if (v[i] == 0 && v[i - 1] < 0) {         temp++;         ans += temp;         temp = 0;       }     }     cout << ans <<   n ;     return 0;   }   