from collections import defaultdict
N,K=list(map(int,input().split()))
A=list(map(int,input().split()))

d=defaultdict(int)

for a in A:d[a]+=1
v=[]
zero=0
for k,x in d.items():
    if k==0:zero=x
    else:v.append(x)
v.sort()
v.reverse()

if len(v)==0:
    if zero>=K:print("Yes")
    else:print("No")
else:
    if zero+v[0]>=K:print("Yes")
    else:print("No")