#include <bits/stdc++.h>
using namespace std;
int main() {
  int t;
  cin >> t;
  while (t--) {
    int n, m;
    cin >> n >> m;
    int sum = 0;
    int a[n];
    for (int i = 0; i < n; i++) {
      cin >> a[i];
      sum += a[i];
    }
    if (sum == m)
      cout << "YES" << endl;
    else
      cout << "NO" << endl;
  }
}
