func_code_string: #include <bits/stdc++.h>   using namespace std;   void pause() {}   bool sortbysecdesc(const pair<int, int> &a, const pair<int, int> &b) {     return a.second > b.second;   }   int rec(int n, int i, int a[], int c) {     c++;     if (n == i) return c;     rec(a[n - 1], i, a, c);   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     int t;     cin >> t;     while (t--) {       int n, a[1005], c = 0;       cin >> n;       for (int i = 0; i < n; i++) {         cin >> a[i];       }       sort(a, a + n);       for (int i = n - 1; i >= 0; i--) {         c++;         if (c == a[i]) {           cout << c;           break;         } else if (c > a[i]) {           cout << c - 1;           break;         }       }       cout <<   n ;     }     pause();   }   