from collections import defaultdict
n, k = map(int, input().split())
a = list(map(int, input().split()))
d = defaultdict(int)
for i in a:
	d[i] += 1
for i, j in d.items():
	if i > 0:
		if j + d[0] >= k:
			exit(print("Yes"))
	else:
		if d[0] >= k:
			exit(print("Yes"))
print("No")