from heapq import heappop,heappush
N,A,B,X,Y = map(int,input().split())
H = list(map(int,input().split()))
q = []
for h in H:
    heappush(q,-h)
while A and q:
    h = heappop(q)
    h *= -1
    if h > X:
        heappush(q,-(h-X))
    A -=1
SUMS = 0
for h in q:
    SUMS += -h
if SUMS <= Y * B:
    print('Yes')
else:
    print('No')