#include<iostream>
using namespace std;

class Node
{
      public:
             int data;
             Node*next;
             Node();
};

Node::Node():data(0),next(NULL)
{
}

int main()
{
    int n;
    cin>>n;
    Node*head,*last;
    Node*temp;
    Node*p;
    head=new Node;
    head->data=1;
    last=new Node;
    head->next=head;
    for(int i=2;i<n;n++)
    {
            temp=temp->next;
            temp->next=new node;
            temp->next=i;
            temp->next->next=head;
  
            
    }
            
    system("pause");
    return 0;
}