Butterfly

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

namespace Butterfly
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int width = 2 * n - 1;
            int wing = n - 2;
            for (int i = 1; i <= n- 2; i++)
            {
                if (i % 2 == 1)
                {
                    Console.WriteLine("{0}\\ /{0}", new string('*', wing));
                }
                else
                {
                    Console.WriteLine("{0}\\ /{0}", new string('-', wing));
                }
            }
            Console.WriteLine("{0}@", new string(' ', wing+1));
            for (int i = 1; i <= n - 2; i++)
            {
                if (i % 2 == 1)
                {
                    Console.WriteLine("{0}/ \\{0}", new string('*', wing));
                }
                else
                {
                    Console.WriteLine("{0}/ \\{0}", new string('-', wing));
                }
            }
        }
    }
}