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