#include <bits/stdc++.h>
using namespace std;
int main(){
    int N;
    cin >> N;
    long long A, B, X, Y;
    cin >> A >> B >> X >> Y;
    vector<long long> H(N);
    for(int i = 0; i < N; i++) cin >> H[i];
    vector<int> ind(N);
    iota(ind.begin(), ind.end(), 0);
    sort(ind.begin(), ind.end(), [&](int x, int y){
        return H[x] > H[y];
    });
    int id = 0;
    while(A){
        int cnt = min(H[ind[id]] / X, A);
        if(cnt == 0) cnt++;
        H[ind[id]] -= cnt * X;
        A -= cnt;
        id++;
    }
    long long sum = 0;
    for(int i = 0; i < N; i++){
        if(H[i] > 0) sum += H[i];
    }
    if(sum <= B * Y) cout << "Yes" << endl;
    else cout << "No" << endl;
}