#include<fstream>
#include<algorithm>
#define MAX 3000002
using namespace std;
unsigned long n,k,i,v[MAX];
int main()
{
	ifstream f("sdo.in");
	ofstream g("sdo.out");
	f>>n>>k;
	for(i=1;i<=k;i++)
		f>>v[i];
	nth_element(v+1,v+k,v+n+1);
	g<<v[k];
	g.close();
	f.close();
}