import java.util.Scanner;

public class EliminateDups {
	public static void main(String[] args) {
		int[] myArray = new int[10];
		Scanner input = new Scanner(System.in);
		for (int i = 0; i < 10; i++) {
			myArray[i] = input.nextInt();
		}
		myArray = eliminateDuplicates(myArray);
		for (int i =0; i < myArray.length; i++) {
			System.out.print(myArray[i] + " ");
		}
	}
	public static int[] eliminateDuplicates(int[] list) {
		int dupes = 0;
		for (int i = 0; i < 10; i ++) {
			for (int j = i+1; j < 10; j++) {
				if (list[i] == list [j]) {
					list[i] = 0;
					dupes++;
				}
			}
		}
		for (int i =0; i < list.length; i++) {
			System.out.print(list[i] + " ");
		}
		System.out.println(" ");

		int[] noDupes = new int[10-dupes];
		for (int i = 0, j = 0; i < noDupes.length; i++)
			System.out.println(list[i]);
			if (list[i] != 0) {
				System.out.print(list[i]);
				noDupes[j] = list[i];
				j++;
			}
		return(noDupes);
	}
}