#include<stdio.h>
int main()
{
    int N;
    scanf("%d", &N);
    if (N < 0)
    {
        printf("Invalid Input");
        return 0;
    }
    int arr[N]
    for (int i = 0; i < N; i++)
    {
        scanf("%d", &arr[i]);
    }
    for (int i = 0; i < N; i++)
    {
        printf("%d ", arr[i]);
    }
    printf("\n");
    for (int i = N - 1; i >= 0; i--)
    {
        printf("%d ", arr[i]);
    }
    return 0;
}