#include <bits/stdc++.h>
using namespace std;
int main(){
	int i,p;
	cin>>i>>p;
	int a[i];
	for(int o=0;o<i;o++)cin>>a[o];
	sort(a,a+i);
	cout<<a[i-p];
	return 0;
}

/**************************************************************
	Problem: 1172
	User: zhouhongyi
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/