#include<stdio.h>
#include<stdlib.h>
typedef struct node{
    int data;
    struct node*next;
    struct node*prev;
}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
    {
        newnode->next=tail;
        tail->next=newNode;
        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);
    for(itr=1;itr<=size;itr++){
        scanf("%d",&num);
        
    
    create(num);
    }
    display();
    return 0;
}