import statistics

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

t = A.count(0)
try:
    A.remove(0)
except:
     s = 0
if A.count(statistics.mode(A)) >= K:
    print("Yes")
elif A.count(statistics.mode(A)) + t >= K:
        print("Yes")
else:print("No")