from collections import Counter

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

cnt = Counter(A)

for k, v in cnt.items():
    if k == 0:
        if cnt[0] >= K:
            print("Yes")
            exit()

        continue

    if v + cnt[0] >= K:
        print("Yes")
        exit()

print("No")