func_code_string: #include <bits/stdc++.h>   using namespace std;   void solve() {     int n;     cin >> n;     string s;     cin >> s;     stack<char> stack;     int left = 0, right = 0, size = 0;     for (int i = 0; i < s.length(); i++) {       stack.push(s[i]);       if (s[i] ==  ( ) {         left++;         continue;       }       if (s[i] ==  )  && left != 0) {         left--;         stack.pop();         continue;       }       if (s[i] ==  )  && left == 0) {         right++;         continue;       }     }     cout << left <<   n ;   }   int main() {     int t;     cin >> t;     while (t--) {       solve();     }   }   