#include<fstream>
#include<time.h>
#include<stdlib.h>
#define Nmax 3000010
using namespace std;
int v[Nmax],K,i,n;

int sdo ( int s, int d )
{
	int i=s,j=d,aux;
	int p = v [ i + rand() % (j-i+1) ];
		
	while(i<j)
	{
		while(v[i]<p) i++;
		while(v[j]>p) j--;
		if(i<j) {aux=v[i]; v[i]=v[j]; v[j]=aux;}
	}
	
	if( i == K ) return v[i];

	if( i > K ) return sdo(s,i-1);
		else    return sdo(i+1,d);
}	

int main()
{
	srand(time(0));
	
	ifstream f("sdo.in");
	ofstream g("sdo.out");
	
	f>>n>>K;
	
	for(i=1;i<=n;i++)
		f>>v[i];
			
	g<<sdo(1,n);
	
	f.close();
	g.close();	
	return 0;
}