// editor2
#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{
    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,i;
    scanf("%d",&size);
    printf("Invalid input");
    return 0;
    
}
for(i=0;i<=size;i++){
    if(!scanf("%d",&num)){
        printf("Invalid input");
        return 0;
    }
    create(num);
    
    }
    display();
}