n, a, b, x, y = map(int, input().split())
H = list(map(int, input().split()))

q = []
for h in H:
    q.append(-h)

import heapq
heapq.heapify(H)
for i in range(a):
    if q:
        v = heapq.heappop(q)
        v = -v
        if v > x:
            v -= x
            heapq.heappush(q, -v)
    else:
        break
if not q:
    print('Yes')
    exit()
s = 0
while  q:
    v = heapq.heappop(q)
    v = -v
    s += v
if s <= y*b:
    print('Yes')
else:
    print('No')