import sys
input = sys.stdin.readline
import heapq

N,A,B,X,Y=map(int,input().split())
H=list(map(int,input().split()))

Q=[]
for h in H:
    Q.append(-h)

heapq.heapify(Q)

for i in range(A):
    x=-heapq.heappop(Q)
    x-=X
    heapq.heappush(Q,-x)
    

S=-sum(Q)
if S<=Y*B:
    print("Yes")
else:
    print("No")