import sys
N,K=map(int,input().split())
A=list(map(int,input().split()))
cards=set(A)
wild=A.count(0)
if wild>=K:
	print("Yes")
	sys.exit()
for x in A:
	if x==0:
		continue
	if wild+A.count(x)>=K:
		print("Yes")
		sys.exit()
print("No")