#include <iostream>
using namespace std;
int main()
{

int i , n;
cin >> n;
i = 0;

    while ( i < n )
    {
       cout <<"*";
       i ++;
    }

cout <<'\n';

    int y = 2;
    while ( y < n )
    {

      cout << "*";
          
          int v = 0;
          int u = n - 2;
          while ( v < u )
          {

              cout <<" ";
              v ++;
          }

      cout << "*";
      cout << '\n';

      y ++;
    }



    int r = 0;
    while ( r < n )
    {

      cout << "*";
      r ++;
    }

     
     
     
     
     
     
     
     
     
      return 0;
}