import math
n,a,b,x,y=list(map(int,input().split()))
h=list(map(int,input().split ()))
for k in range(a):
    mi=h.index(max(h))
    h[mi]-=x
for i in range(b):
    p=y
    for j in range(n):
        if h[j]>0:
            d=min(p,h[j])
            p-=d
            h[j]-=d
            if p==0:
                break
    if i==b-1 and max(h)>0:
        print("No")
        break
    if max(h)<=0:
        print("Yes")
        break