using System;

public class Program

{

    public static void Main()

    {

        Console.Write("Velikost: ");

        int velikost;

        try

        {

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

        }

        catch

        {

            return;

        }

        for (int i = 1; i <= velikost; i++)

        {

            string radek = new string(' ', velikost - i) + new string('*', (i * 2) - 1);

            Console.WriteLine(radek);

        }

    }

}