// editor2
#include<stdio.h>
#include<stdlib.h>
typedef struct node(){
    int data;
    struct node *prev;
    struct node *next;
}node;
node *head == NULL;
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->prev=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 n,num;
    scanf("%d",&n);
    for(int i =0;i<n;i++){
        scanf("%d",&num);
        create(num);
        
    }
display();
return 0;
    
}