import java.io.*;
import java.util.*;

public class rezlind
{
    public static void main(String[] args)
    {
        int[] test = {1,2,3,4,5,1,2,3,4,5,5,5,1,2,3,1,};

        int[] answer = solve(test);

        for(int i = 0; i < answer.length;i++)
        {
            System.out.println(answer[i] + " ");
        }
    }

    public static int[] solve(int[] array)
    {
        String list = "";
        int elements = 0;
        for(int i =0; i < array.length;i++)
        {
            if(!list.contains(""+array[i]))
            {
                list+=""+array[i]+",";
                elements++;
            }
        }
        //System.out.println(list);
        int[] newarray = new int[elements];
        StringTokenizer st = new StringTokenizer(list,",",false);
        for(int i = 0; i < elements;i++)
        {
            newarray[i] = new Integer(st.nextToken());
        }
        return newarray;
    }
}