110. DOTA.cpp

#include<bits/stdc++.h>
using namespace std;

//defined my macro functions
#define max3(a,b,c) max(a,max(b,c))
#define min3(a,b,c) min(a,min(b,c))

//defined my macro strings
#define ENDL "\n"
#define SPACE " "

//defined my constants
const int INF = 0x3f3f3f3f;
const int MOD = 1000000007;
const double EPS = 1e-8;
const double PI = 3.14159265358979323846;

//defined my own datatypes
typedef long long ll;
typedef unsigned long long ull;

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int t;
    cin>>t;
    while(t--)
    {
        int hero, tower, damage;
        cin>>hero>>tower>>damage;
        int strongHero = 0;
        int health;
        for(int i = 0; i < hero; i++)
        {
            cin>>health;
            strongHero += ceil(health * 1.0 / damage) - 1;
        }
        if(strongHero >= tower) cout<<"YES"<<endl;
        else cout<<"NO"<<endl;
    }

    return 0;
}