#include <iostream>
using namespace std;

int main()
{
	int k, n, help;
        cin >> n >> k;
	int tab[n];

	for (int i = 0; i < n; i++)
	{
		cin >> tab[i];
	}

	//sortowanie
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n - 1; j++)
		{
			if (tab[j] > tab[j + 1])
			{
				help = tab[j];
				tab[j] = tab[j+1];
				tab[j + 1] = help;
			}
		}
	}

    //danych wyświetlanko
    cout << "\n";
    for (int i = 0; i < k; i++)
    {
        if (tab[i] != tab[i + 1])
        {
            cout << tab[i]<< "\n";
        }
    }
}