Пеперуда

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

namespace _05.Пеперуда
{
    class Program
    {
        static void TopPartOfButterFly(int n)
        {
            int stars = n - 2;
            int space=1;
            int backslash;
            int line= n - 2;
            for (int i = 0; i < (n-2)/2; i++)
            {
                Console.WriteLine("{0}\\{1}/{0}", new string('*', stars), new string(' ', space));
                Console.WriteLine("{0}\\{1}/{0}", new string('-', line), new string(' ', space));
            }


        }
        static void MiddlePartOfButterFly(int n)
        {
            int stars = n - 2;
            int space = n - 2;
            Console.WriteLine("{0}\\{1}/{0}", new string('*', stars), new string(' ', 1));
            Console.WriteLine("{0}@{0}", new string(' ', space+1), new string(' ', 1));
            Console.WriteLine("{0}/{1}\\{0}", new string('*', stars), new string(' ', 1));
        }

        static void BottomPartOfButterFly(int n)
        {
            int stars = n - 2;
            int space = 1;
            int line = n - 2;
            for (int i = 0; i < (n - 2) / 2; i++)
            {
                Console.WriteLine("{0}/{1}\\{0}", new string('-', line), new string(' ', space));
                Console.WriteLine("{0}/{1}\\{0}", new string('*', stars), new string(' ', space));
            }
        }
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            TopPartOfButterFly(n);
            MiddlePartOfButterFly(n);
            BottomPartOfButterFly(n);

        }
    }
}