from collections import deque

n, a, b, x, y = map(int,input().split())
h = list(map(int,input().split()))
h.sort()
q1 = deque(h)
q2 = deque()

for i in range(a):
    now = 0
    if not q1:
        now = q2.pop()
    if not q2:
        now = q1.pop()
    
    if q1[-1] > q2[-1]:
        now = q1.pop()
    else:
        now = q2.pop()
    now = max(now - a, 0)
    q2.appendleft(now)
if sum(q1) + sum(q2) <= b * y:
    print('Yes')
else:
    print('No')