#include <bits/stdc++.h>
using namespace std;
int t, n, m, i, ans, a;
int main() {
  cin >> t;
  while (t--) {
    cin >> n >> m;
    ans = 0;
    for (i = 1; i <= n; i++) {
      cin >> a;
      ans += a;
    }
    if (ans == m)
      cout << "YES" << endl;
    else
      cout << "NO" << endl;
  }
}
