#include<stdio.h>
#include<stdlib.h>
typedef struct node
{
    int data;
    struct node*next;
    struct node*prev;
}Node;
Node *head=NULL,*tail;
void create()
{
    Node *newNode =(Node*)malloc(1*sizeof(Node));
    newnode->data=num;
    newNode->next=NULL;
    newNode->prev=NULL;
    if(head==NULL)
    {
        newNode->next=newNode;
        newNode->prev=newNode;
        head=newNode;
    }
    else
    {
        Node*tail=head->prev;
        tail->next=newNode;
        newNode->prev=tail;
        newNode->next=head;
        head->prev=newNode;
    }
}
void display()
{
    Node*tail=head->prev;
    Node*i=tail;
    do{
        printf("%d",i->data);
        i=i->prev;
    }while(i!=tail)
    printf("\n");
}
int main()
{
    int n,i,num,val;
    scanf("%d",&n);
    if(n<0)
    {
        printf("Invalid input");
        return 0;
    }
    for(i=1;i<=n;i++)
    {
        scanf("%d",&num);
        create(num);
    }
    scanf("%d",&val);
    insertion(val);
    display();
    return 0;
}