#include<algorithm>
#include<iostream>
#include<cstring>
#include<cstdio>
using namespace std;
long long int n,k,a[1000000];
int main()
{
	cin>>n>>k;
	for(int i=0;i<=n;++i)
	{
		cin>>a[i];
	}
	nth_element(a,a+k,a+n);
	cout<<a[k]<<endl;
	return 0;
}