using System;

public class Program

{

    public static void Main()

    {

        int n = int.Parse(Console.ReadLine());

        for (int row = 0; row < n; row++)

        {

            Console.Write("*");

            for (int i = 0;i < n - 2 ;i++)

            {

                Console.Write(" *");

            }

            Console.WriteLine(" *");

        }

    }

}