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