n, a, b, x, y = map(int, input().split())
H = list(map(int, input().split()))
for i, h in enumerate(H):
    z = h // x
    c = min(a, z)
    a -= c
    H[i] -= c * x

H.sort()
while H and a > 0:
    H.pop()
    a -= 1
if sum(H) <= b * y:
    print("Yes")
else:
    print("No")