#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: lijinkai
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2076 kb
****************************************************************/