02.Butterfly

using System;

namespace _02.Butterfly
{
    class Butterfly
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            int halfRowSize = n - 2;

            for (int i = 1; i <= halfRowSize; i++)
            {
                if (i % 2 != 0)
                {
                    Console.Write(new string('*', n - 2) + "\\");
                    Console.Write(" ");
                    Console.Write("/" + new string('*', n - 2));
                    Console.WriteLine();
                }
                else
                {
                    Console.Write(new string('-', n - 2) + "\\");
                    Console.Write(" ");
                    Console.Write("/" + new string('-', n - 2));
                    Console.WriteLine();
                }

            }

            Console.Write(new string(' ', n - 1));
            Console.Write("@");
            Console.Write(new string(' ', n - 1));
            Console.WriteLine();

            for (int i = 1; i <= halfRowSize; i++)
            {
                if (i % 2 != 0)
                {
                    Console.Write(new string('*', n - 2) + "/");
                    Console.Write(" ");
                    Console.Write("\\" + new string('*', n - 2));
                    Console.WriteLine();
                }
                else
                {
                    Console.Write(new string('-', n - 2) + "/");
                    Console.Write(" ");
                    Console.Write("\\" + new string('-', n - 2));
                    Console.WriteLine();
                }
            }
        }
    }
}