n,a,b,x,y,*H = map(int,open(0).read().split())
y *= b
L = []
for h in H:
    m = min(a,h//x)
    h -= x*m
    a -= m
    L.append(h)
L.sort()
while L and a:
    L.pop()
    a -= 1
if sum(L) <= y:
    print("Yes")
else:
    print("No")