// Program 15: Remove Duplicate Array Elements In Place

import java.util.*;
class ArrayUnique {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] a = new int[10];
        for (int i = 0; i < 10; i++) {
            a[i] = sc.nextInt();
        }
        int size = 10;
        for (int i = 0; i < size; i++) {
            int j = i + 1;
            while (j < size) {
                if (a[i] == a[j]) {
                    for (int k = j; k < size - 1; k++) {
                        a[k] = a[k + 1];
                    }
                    size--;
                } else {
                    j++;
                }
            }
        }
        for (int i = 0; i < size; i++) {
            System.out.print(a[i] + " ");
        }
    }
}