func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     int t;     cin >> t;     int n, num, ctr;     string s;     while (t--) {       cin >> n >> s;       num = 0;       ctr = 0;       for (char ch : s) {         if (ch ==  ) ) {           num--;           if (num < 0) ctr++, num++;         } else           num++;       }       cout << ctr <<   n ;     }   }   