func_code_string: #include <bits/stdc++.h>   using namespace std;   const int OO = INT_MAX;   const int N = 2e5 + 2;   const int MOD = 1e9 + 7;   double ebs = 1e-6;   const int INF = 0x3f3f3f3f;   int in[N];   map<int, int> mp;   int main() {     ios::sync_with_stdio(0);     int t;     cin >> t;     while (t--) {       mp.clear();       int n;       cin >> n;       for (int i = 0; i < n; i++) {         cin >> in[i];         mp[in[i]]++;       }       long long res = 0, m = 0;       for (auto it = mp.begin(); it != mp.end(); it++) {         it->second += m;         res += it->second / it->first;         m = it->second % it->first;       }       cout << res << endl;     }   }   