#include <bits/stdc++.h>   using namespace std;   signed main() {     long long int t;     cin >> t;     while (t--) {       long long int n, x, i;       cin >> n >> x;       long long int second = 0;       long long int a[n];       for (long long int i = 0; i < n; i++) {         cin >> a[i];       }       sort(a, a + n);       for (i = n - 1; i >= 0; i--) {         second += a[i];         if (second / (n - i) < x) break;       }       cout << n - (i + 1) << endl;     }   }   