#include <stdio.h>
int main() {
    int arr[];
    int n = sizeof(arr) / sizeof(arr[0]);
    scanf("%d");
    for (int i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }
    printf("\n");
    for (int i = 0; i < n; i++) {
        int flag = 0;
        for (int j = 0; j < i; j++) {
            if (arr[i] == arr[j]) {
                flag = 1;
                break;
            }
        }
        if (flag == 0) {
            printf("%d ", arr[i]);
        }
    }
}