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

d = {}
cnt_zero = 0

for a in A:
    if a == 0:
        cnt_zero += 1
    else:
        if a in d:
            d[a] += 1
        else:
            d[a] = 1

m = 0
for k, v in d.items():
    m = max(m, v)

if m + cnt_zero >= K:
    print('Yes')
else:
    print('No')