#include<stdio.h>
#include<stdlib.h>
typedef struct node {
    int data;
    struct node*prev;
    struct node*next;
}node;
node*head=NULL,*tail;
void create(int num) {
    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;itr1!=NULL;itr=itr->next) {
        printf("%d ",&itr->data);
    }
}
int main() {
    int itr,num,size;
    scanf("%d",&size);
    if(size<=0) {
        printf("Invalid input");
        return 0;
    }
    for(itr=1;itr<=size;itr++)
    {
        scanf("%d",&size);
        create(num);
    }
      display();
      return 0;
        
}