#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); ++i)

using std::cin;
using std::cout;
using std::vector;
using ll = long long;

int main() {
	int n, a, b;
	ll x, y;
	cin >> n >> a >> b >> x >> y;
	
	vector<ll> h(n);
	rep(i, n) cin >> h[i];
	sort(h.rbegin(), h.rend());
	rep(i, n) {
		if (a) {
			h[i] -= x;
			a--;
		}
	}
	sort(h.rbegin(), h.rend());
	if (a) {
		rep(i, n) {
			if (a) {
				h[i] -= x;
				a--;
			}
		}
	}
	
	ll s = 0;
	rep(i, n) {
		if (h[i] <= 0) continue;
		s += h[i];
	}
	
	if (b*y >= s) puts("Yes");
	else puts("No");
	
	return 0;
}