#include <bits/stdc++.h>
#define int long long int
#define debug cout<<"K"
#define mod 1000000007
 
using namespace std;
 
int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int t;
    cin>>t;
    while(t>0)
    {
        int mx=0;
        int n,x,y;
        cin>>n>>x>>y;
        int a[n];
        for(int i=0;i<n;i++)
        {cin>>a[i];
        mx=max(mx,a[i]);}
        if(x>=y)
        {
            int c=0;
            int ans=0;
            for(int i=n-1;i>=0;i--)
            {
                a[i]-=c*y;
                if(a[i]>0)
                {
                    ans+=(a[i]+x-1)/x;
                    c+=(a[i]+x-1)/x;
                }
            }
            cout<<ans<<"\n";
        }
        else
        cout<<(mx+y-1)/y<<"\n";
        
        t--;
    }
    return 0;
}