#include<stdio.h>
#include<stdlib.h>
struct Node{
    int data;
    struct Node*prev;
    struct Node*next;
};
struct Node*createNode(int data){
    struct Node*newNode=(struct Node*)malloc(sizeof(struct Node));
    if(!newNode){
        printf("Memory error\n");
        exit(1);
    }
    newNode->data=data;
    newNode->prev=NULL;
    newNode->next=NULL;
    return newNode;
}
int main(){
    int n;
    if(scanf("%d",&n)!=1||n<=0||n>10)
    {
        printf("Invalid input\n");
        return 0;
    }
    struct Node*head=NULL;
    struct Node*tail=NULL;
    for(int i=0;i<n;i++){
        int val;
        if(scanf("%d",&val)!=1||val<-10000||val>10000){
            printf("Invalid input\n");
            return 0;
        }
        struct Node*newNode=createNode(val);
        if(head==NULL){
            head=newNode;
            tail=newNode;
        }else{
            tail->next=newNode;
            newNode->prev=tail;
            tail=newNode;
        }
    }
    struct Node*temp=head;
    while(temp!=NULL){
        print("%d",temp->data);
        if(temp->next!=NULL)printf(" ");
        temp=temp->next;
    }
    printf("\n");
    return 0;       
        }