from sys import stdin
from heapq import heappush, heappop

n, a, b, x, y, *h = map(int, stdin.read().split())
hq = []
for i in range(n):
    heappush(hq, -h[i])

for i in range(a):
    if hq:
        now = -heappop(hq)
        if now > x:
            kari = now - x
            heappush(hq, -kari)

kari = 0
while hq:
    kari += -heappop(hq)

if kari <= b * y:
    print("Yes")
else:
    print("No")