CF 1436A

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define test int t; cin>>t; for(int cs=1;cs<=t;cs++)
int main()
{
   ios_base::sync_with_stdio(0);
   cin.tie(0);cout.tie(0);

   test
   {
       ll a,c,m,e=0,f;
       cin>>a>>m;
       while(a--)
       {
           cin>>f;
           e+=f;
       }
       if(m==e) cout<<"YES"<<endl;
       else cout<<"NO"<<endl;
   }


   return 0;
}