import java.util.Scanner;

public class RandomEasyHomework {

    public static void main(final String[] args) {
        final Scanner input = new Scanner(System.in);

        final int[] array = new int[5];
        for(int i = 0; i < array.length; i++) {
            System.out.println("Enter number " + (i + 1));
            array[i] = input.nextInt();
        }

        outer:
        for(int i = 0; i < array.length; i++) {
            for(int j = 0; j < i; j++) {
                if(array[j] == array[i])
                    continue outer;
            }
            System.out.print(array[i] + " ");
        }
        System.out.println();
    }

}