f=lambda:map(int,input().split())
n,k=f()
*a,=f()
b=list(set(sorted(a)))[::-1]
m=0
for i in b:
	s=[t for t in a if t>=i]
	if len(s)>k:
		print(m)
		break
	else:
		m=len(s)
else:
	print(n)