using System;

namespace Pyramidi
{
    class Ohjelma
    {
        static void Main()
        {
            int maxHeight = 0;
            do
            {
                Console.Write("Anna korkeus: ");
                maxHeight = Convert.ToInt32(Console.ReadLine());
                if (maxHeight > 0)
                {
                    break;
                }
                else
                {
                    continue;
                }
            }
            while (true);

            for (int height = 0; height < maxHeight; height++)
            {
                for (int i = 0; i < (maxHeight - height - 1); i++)
                {
                    Console.Write(" ");
                }
                for (int i = 1; i <= (height * 2 + 1); i++)
                {
                    Console.Write("*");
                }
                Console.WriteLine();
            }
        }
    }
}