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

p = Y*B
for i in range(N):
    if A>0:
        H[i]-=X
        A-=1

    if H[i]>0 and p>0:
        d = min(p,H[i])
        H[i]-=d
        p-=d

print('Yes'if sum(H)<=0 else 'No')