n,a,b,x,y = map(int,input().split())
h = list(map(int,input().split()))
from heapq import heappush, heappop
hq = []
for i in h:
	heappush(hq,-i)
for i in range(a):
	t = heappop(hq)
	t += x
	heappush(hq,t)
if -sum(hq)<=b*y: print('Yes')
else: print('No')