#include <algorithm>
#include <iostream>
#include <vector>

using namespace std;

void solve() {
  int n, k;
  cin >> n >> k;
  vector<int> a(n);
  for (auto &i : a)
    cin >> i;
  int h = a[k - 1];
  sort(a.begin(), a.end());

  int time = 0;
  for (auto H : a) {
    if (H <= h)
      continue;
    time += H - h;
    if (time > h) {
      cout << "NO\n";
      return;
    }
    h = H;
  }

  cout << "YES\n";
}

int main() {
  int t;
  cin >> t;
  while (t--) {
    solve();
  }
}