from collections import Counter

N, K = map(int, input().split())
A = list(map(int, input().split()))

C = Counter(A)
L = C.most_common()
# print(L)
ans = C[0]
for i, item in enumerate(L):
    if item[0] != 0:
        ans += item[1]
        break
if ans >= K:
    print('Yes')
else:
    print('No')