// editor1
#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;
    }
    else{
        tail->next=newNode;
        tail=newNode;
    }
}
Node*fast,*slow,*temp=head;
void delete(){
    slow=head;
    fast=head->next;
    while(fast!=NULL&&fast->next!=NULL){
        slow=slow->next;
        fast=fast->next;
    }
    free(slow);
    
void display(){
    Node *itr;
    for(itr=0;itr!=NULL;itr=itr->next){
        printf("%d",itr->data);
        
    }
}
    


int main(){
    int size,i,num;
    scanf("%d",&size);
    if(size<0){
        printf("Invalid input");
        return 0;
    }
    for(i=0;i<size;i++){
        scanf("%d",&num);
        create(num);
    }
}