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();
	}
	
}