using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Wzorki
{
    class Program
    {
        const char CHAR = '*';
        static void Star() => Console.Write(CHAR);
        static void StarLn() => Console.WriteLine(CHAR);
        static void Space() => Console.Write(" ");
        static void SpaceLn() => Console.WriteLine(" ");
        static void NewLine() => Console.WriteLine();

        public static void Trojkat(int n)
        {
            if (n % 2 == 0) n = n - 1;
            //górna podstawa
            for (int i = 0; i < n; i++)
            {
                Star();
            }
            NewLine();

            //środek
            for (int i = 1; i < (n / 2); i++)
            {
                for (int j = 0; j < i; j++)
                {
                    Space();
                }
                Star();
                for (int j = n - 2 - (2 * i); j > 0; j--)
                {
                    Space();
                }
                StarLn();
            }

            //czubek
            if (n % 2 == 1)
            {
                for (int i = 0; i < n / 2; i++)
                {
                    Space();
                }
                StarLn();
            }
        }
        public static void Main(string[] args)
        {
            Console.WriteLine("Podaj rozmiar figury: ");
            int n = Convert.ToInt32(Console.ReadLine());
            Trojkat(n);
            Console.ReadKey();
        }
    }
}