#include<stdio.h>
#include<stdlib.h>
#include<string.h>
typedef struct node
{
    char data[20];
    struct node *next;
    struct node *prev;
}Node;
Node *head=NULL, *tail;
void create(char *ch )
{
    Node *newNode=(Node*)malloc(1*sizeof(Node));
    strcpy(newNode->data,ch);
    newNode->next=NULL;
    if(head==NULL)
    {
        head=newNode;
        tail=newNode;
    }
else
{
    newNode->prev=tail;
    tail->next=newNode;
    tail=newNode;
}
}
void display()
{
    Node *itr;
    for(;itr=!head;itr=itr->prev){
    printf("%s ",itr->data);
    printf("%s",itr->data);
    
}
}
int main()
{
    int size;itr;
    scanf("%d",&size);
    if(size<0)
    {
        printf("Invalid input");
        return 0;
    }
    char ch[20];
    for(itr=1;itr<=size;itr++)
    {
        if(scanf("%s",ch)!=1)
        break;
        create(ch);
    }
    display();
    return 0;
}