#include<iostream>
#include<algorithm>
using namespace std;
int N,A,B,X,Y;
int H[3000];
main()
{
	cin>>N>>A>>B>>X>>Y;
	long all=(long)Y*B;
	for(int i=0;i<N;i++)
	{
		cin>>H[i];
		while(A>0&&H[i]>=X)H[i]-=X;
		all-=H[i];
	}
	sort(H,H+N);
	for(int i=0;i<A&&i<N;i++)all+=H[N-i-1];
	cout<<(all<0?"No":"Yes")<<endl;
}