#include <iostream>
#include <vector>
#include <fstream>
using namespace std;
ifstream fin("sdo.in");
ofstream fout("sdo.out");
int n, k;
vector<int> v;

int partition(int left, int right)
{
    int i = left;
    int pivot = rand() % (right - left + 1) + left;
    swap(v[right], v[pivot]);
    while(left < right)
    {
        if(v[left] <= v[right])
            swap(v[i++], v[left]);
        left++;
    }
    swap(v[i], v[right]);
    return i;
}

// partition
int kthSmallest(int left, int right, int k)
{
    if(k > 0 && k <= right - left + 1)
    {
        int index = partition(left, right);
        if(index - left == k - 1)
            return v[index];
        if(index - left > k - 1)
            return kthSmallest(left, index - 1, k);
        return kthSmallest(index + 1, right, k - index + left - 1);
    }
    return 0;
}

int main()
{
    fin >> n >> k;
    for(int i = 0; i < n; ++i)
    {
        int x;
        fin >> x;
        v.push_back(x);
    }
    fout << kthSmallest(0, n - 1, k);
    v.clear();
    return 0;
}