n,a,b,x,y=map(int,input().split())
h=list(map(int,input().split()))
i=0
while a and i<n:
    if h[i] >= x:
        h[i] -= x
        a-=1
    else:
        i+=1
#aが余ってたらいいよね
for j in range(a):
    i=h.index(max(h))
    h[i] = max(0,h[i]-x)



if sum(h) <= y*b:
    print("Yes")


else:
    print("No")