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


        }
        
        
    

    

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

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

        
        
        
    
}