n,x,m = map(int,input().split())
a = list(map(int,input().split()))

# 操作回数は高々 N log N
# シミュレーションすればok

f = 0

while True:
	last = -1
	for i in range(n):
		if a[i] >= x:
			last = i
	if last == -1:
		break
	for i in range(last+1):
		a[i] //= 2
	f += last+1

if f <= m:
	print("Yes")
else:
	print("No")