#include <iostream>
#include <fstream>
#include <set>

using namespace std;

ifstream in("sdo.in");
ofstream out("sdo.out");

set<int> v;

int main() {

    int n,k,nr;

    in >> n >> k;

    for(int i = 0; i < n; i++) {
        in >> nr;
        v.insert(nr);
    }

    set<int>::iterator it = v.begin();
    advance(it, k-1);
    out << *it;

    return 0;
}