// editor1
#include<stdio.h>
#include<stdlib.h>
 typedef struct node
 {
     int data;
     struct node *next;
 }Node;
 
 Node *head = NULL,*tail;
 void create(int num)
 {
     Node *newNode = (*node) malloc (1 * sizeof(Node));
     newNode->data = num;
     newNode->next = NULL;
     if(head==NULL)
     {
         head=newNode;
         tail=newNode;
     }
     else
     {
         tail->next=newNode;
         tail=newNode;
     }
     
 }
 
 void display()
 {
     struct node *itr;
     for(itr=head;itr!=NULL;itr=itr->next)
     {
         printf("%d"itr->data);
     }
 }
 
 int main()
 {
     int size,itr,num;
     scanf("%d",&size);
     if(size<0)
     {
         printf("Invalid input");
         return 0;
     }
     for(itr=1;itr<=size;itr++)
     {
         if(!scanf("%d",num))
         {
             printf("Invalid Input");
             return 0;
         }
        
     }
     display();
     return 0;
 }