gistfile1.txt

package strings;
/*

import java.util.*;

class Distinct {
    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        boolean[] duplicates = new boolean[128];
        String str = sc.nextLine();
        String res = "";
        for (int i = 0; i < str.length(); i++) {
            //use this to get ASCII of any character
            int e = (int) str.charAt(i);
            duplicates[e] = true;
        }
        */
/**
         * Now, Iterate duplicates array
         * an element will register as true only one time and will be printed only one time, thanks to mapping
         * so, append such elements to your String res and print the result
         *//*

        for (int i = 0; i < 128; i++) {
            if (duplicates[i]) {
                // get the character back from ascii encoding
                res += (char) i;
            }
        }
        System.out.println(res);
    }
}
*/

import java.util.*;

class duplicate{
    public static void main(String args[])
    {
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        int arr[]=new int[n];
        for(int i=0;i<n;i++)
        {
            arr[i]=sc.nextInt();
        }
        String w="";
        for(int i=0;i<arr.length;i++)
        {
            String k=arr[i]+"";
            if(w.indexOf(k)==-1)
                w=w+k+" ";

        }
        System.out.println(w);
    }

}