#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(sizeof(node))
    newnode->data=num;
    newnode->prev=NULL;
    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->next;itr!=NULL;itr=itr->next){
        printf("%d ",itr->data);
    }
}
int main(){
    int n,num,itr;
    scanf("%d",&n);
    if(n<0){
        printf("Invalid input");
        return 0;
         }
    for(itr=0;itr<n;itr++){
        scanf("%d",&num);
        create(num);
    }
    display();
}