Sandglass_Second

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

namespace Sandglass_Second
{
    class Sandglass_Second
    {
        static void Main(string[] args)
        {
            int N = int.Parse(Console.ReadLine());
            int M = 1;
            if (N % 2 != 0)
            {
                for (int i = 1; i <= M; i++)
                {
                    if (M <= N - i)
                    {
                        Console.WriteLine("{0}{1}{0}", new string(' ', i), new string('*', N - M - i));
                        System.Threading.Thread.Sleep(1000);
                        M++;
                    }
                }
                for (int j = M; j >= 1; j--)
                {
                    if (M < N - j)
                    {
                        M--;
                        Console.WriteLine("{0}{1}{0}", new string(' ', j), new string('*', N - M - j + 1));
                        System.Threading.Thread.Sleep(1000);
                    }
                }
            }
            else
            {
                for (int i = 1; i <= M; i++)
                {
                    if (M <= N - i)
                    {
                        Console.WriteLine("{0}{1}{0}", new string(' ', i), new string('*', N - M - i + 1));
                        System.Threading.Thread.Sleep(1000);
                        M++;
                    }
                }
                for (int j = M; j >= 0; j--)
                {
                    if (M < N - j)
                    {
                        M--;
                        Console.WriteLine("{0}{1}{0}", new string(' ', j + 1), new string('*', N - M - j + 1));
                        System.Threading.Thread.Sleep(1000);

                    }
                }
            }
        }
    }
}