n,k=map(int,input().split())
l1=[]
l2=[]
for i in range(1,n+1):
    a=int(input())
    l1.append(a)
l1.sort(reverse = True);

print(l1[k-1])
/**************************************************************
	Problem: 1172
	User: admin
	Language: Python
	Result: Accepted
	Time:98 ms
	Memory:34480 kb
****************************************************************/