typedef long long ll;
typedef long double ld;

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

signed main(){
    ll n,a,b,x,y;
    std::cin >> n>>a>>b>>x>>y;
    vector<ll> h(n);
    ll sum = 0;
    ll kai = 0;
    for (int i = 0; i < n; i++) {
        std::cin >> h[i];
        sum += h[i];
        ll num = min(a-kai, h[i]/x);
        h[i] -= num*x;
        sum -= num*x;
        kai += num;
    }
    sort(h.rbegin(),h.rend());
    for (int i = 0; i < a-kai; i++) {
        sum -= h[i];
    }
    if(sum<=b*y){
        std::cout << "Yes" << std::endl;
    }else{
        std::cout << "No" << std::endl;
    }
}