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

   for ( int j = 0 ; j < n ; j ++ )
   {
      for ( int i = 0 ; i < n ; i ++ )
      {
           if ( (j =  n - 1) || (j = 0) || (i = n - 1) || (i = 0) || (i = j) || ((i + j == n - 1) && i != j) )
           {
               cout <<"*";
           }
      }

      cout <<'\n';
   }




   return 0;
}