#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(1*sizeof(Node));
    newnode->data=num;
    newnode->next=NULL;
    newnode->prev=NULL;
    if(head==NULL){
        head=newnode;
        tail=newnode;
    }
    else{
        tail->next=newnode;
        newnode->prev=tail;
        tail=newnode;
    }
}
void display(){
    Node *itr;
    for(itr=head; itr!=NULL; itr=itr->next){
        printf("%d ", itr->data);
    }
}
int main(){
    int size, num, itr;
    scanf("%d", &size);
    if(size<=0){
        printf("Invalid input");
        return 0;
    }
    for(itr=1; itr<=size; itr++){
        if(!  scanf("%d", &num))
        printf("Invalid input");
        return 0;
    }
     create(num);
}
display();
return 0;