#include <fstream>
#include <vector>
#include <algorithm>
#define nmax 3000001
using namespace std;
ifstream fin("sdo.in");
ofstream fout("sdo.out");
vector<int> v;
int main()
{
    int k,m;
    int a[nmax];
    fin>>m;
    for(int i=1;i<=m;i++)
        fin>>a[i];
    fin>>k;
    sort(a+1,a+m);
    fout<<a[k];

    return 0;
}