from heapq import heapify,heappop,heappush

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

H=[-hp for hp in H]
heapify(H)

for _ in range(A):
    if not H:
        continue

    hp=-heappop(H)
    if hp>=X:
        heappush(H,-(hp-X))

print("Yes" if -sum(H)<=B*Y else "No")