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