#include <bits/stdc++.h>
#include<iostream>
#include<map>
#include<vector>
#include <algorithm>
#include<math.h>
#include <iomanip>
#include<set>
#include <numeric>
#include<string>
using ll = long long;
using namespace std;

int main()
{
    ll t, n, m, tmp;
    cin >> t;
    bool no = false;
    for (int i = 0; i < t; i++){
        cin >> n >> m;
        vector<ll> a(n+1);
        a[0] = m;
        for (int j = 1; j <= n; j++){
            cin >> tmp;
            if (a[j] > tmp){
                no = true;
            }
            if (j != n){
                a[j+1] += (a[j - 1] + a[j] - tmp);
                a[j] = tmp;
            }
        }
        if (no) {
            cout << "No" << "\n";
            no = false;
        } else if (a[n-1] + a[n] == m) cout << "Yes" << endl;
    }
}