func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int t;     cin >> t;     while (t--) {       int n;       cin >> n;       char ch;       string str;       cin >> str;       int n1 = 0, n2 = 0;       int ct = 0;       for (int i = 0; i < n; i++) {         if (str[i] ==  ( ) {           if (n2 > 0) {             if (n2 > n1) {               n2 = 0;               n1 = 0;             } else {               n1 -= n2;               n2 = 0;             }           }           n1++;         } else {           n2++;           if (n2 > n1) ct++;         }       }       cout << ct << endl;     }     return 0;   }   