using System;

public class Program

{

    public static void Main()

    {

        Console.Write("Въведете страна на раомба: ");

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

        for (int row = 1; row<=n; row++)

        {

            for (var col = 1; col <= n - row; col++)

                 Console.Write(" ");

            Console.Write("*");

            for (var col=1; col<row; col++)

                Console.Write(" *");

            Console.WriteLine();

        }

        for (int row = n-1; row>0; row--)

        {

            for (var col = n- row; col>0; col--)

                Console.Write(" ");

            Console.Write("*");

            for(var col = row-1; col>0; col--)

                Console.Write(" *");

            Console.WriteLine();

        }

    }

}