func_code_string: #include <bits/stdc++.h>   using namespace std;   int n;   int cnt = 0;   void rec(vector<bool> mask, int i, int ops) {     if (cnt == n) return;     if (i == n) {       for (int j = 0; j < n; j++) cout << char( (  + mask[j]);       for (int j = 0; j < n; j++) {         if (ops > 0) {           cout <<  ) ;           ops--;         } else {           cout <<  ( ;           ops++;         }       }       cout << endl;       cnt++;     } else {       mask[i] = 0;       rec(mask, i + 1, ops + 1);       if (ops > 0) {         mask[i] = 1;         rec(mask, i + 1, ops - 1);       }     }   }   int main() {     ios::sync_with_stdio(false);     cin.tie(0);     int T;     cin >> T;     while (T--) {       cin >> n;       cnt = 0;       vector<bool> t(n, 0);       rec(t, 0, 0);     }     return 0;   }   