#include <bits/stdc++.h>
using namespace std;
 
int main() {
    int N =0;int A=0;int B=0;int X=0;int Y=0;
    cin >> N >> A >> B >> X >> Y ;
    vector<int> H(N);
    for (int i = 0;i<N;i++){
        cin >> H.at(i);
    }
    int i = 0;
    while (A > 0){
        sort(H.begin(), H.end(), std::greater<int>() );
        if (H[i] <= X && H[i] != 0){
            H[i]=0;
            A--;
            
        } 
        else if(H[i] != 0 && H[i] > X){
            H[i] = H[i] - X;
            A--;
        }
        else{
            break;
        }


        }
        
        
    

    

    int sum_H = accumulate(H.begin(), H.end(), 0);
    if (sum_H <= B * Y){
        cout << "Yes"<<endl;

    }
    else{
         cout << "No"<<endl;
    }

        
        
        
    
}