n,a,b,x,y = map(int,input().split())
h = list(map(int,input().split()))
h.sort(reverse=True)
i = 0
while a and i < n:
    if h[i] >= x:
        h[i] -= x
        a -= 1
    else:
        i += 1
i = 0
while a and i < n:
    if h[i] <= 0:
        i += 1
    else:
        h[i] -= x
        a -= 1
if sum(h) <= y*b:
    print("Yes")
else:
    print("No")