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