using System;

using System.Collections.Generic;               

public class Program

{

    public static void Main()

    {

        string entrada = Console.ReadLine();

        int convertido = Convert.ToInt32(entrada);

        List<string> seq = new List<string>();

        for(int i = convertido % 2; i <= convertido; i = i + 2 )

        {

            seq.Add(new String('*', i));

        }

        List<string> seqInv = new List<string>();

        seqInv.AddRange(seq);

        seqInv.RemoveAt(seqInv.Count -1);

        seqInv.Reverse();

        seq.AddRange(seqInv);

        foreach(string item in seq)

        {

            Console.WriteLine(new String(' ', convertido - (item.ToString().Length/2)) + item);

        }

​

        Console.ReadLine();

    }

}