Ladybird

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

namespace Ladybird
{
    class Program
    {
        static void Main(string[] args)
        {
            var n = int.Parse(Console.ReadLine()); //2...1 000

            //var with = (int)2 * n + 1; //ширина на фигурата

            for (int i = 0; i < n - 2; i++) Console.Write(" ");
            Console.WriteLine("@   @");
            for (int i = 0; i < n - 2; i++) Console.Write(" ");
            Console.WriteLine(" \\_/ ");
            for (int i = 0; i < n - 2; i++) Console.Write(" ");
            Console.WriteLine(" / \\ ");
            for (int i = 0; i < n - 2; i++) Console.Write(" ");
            Console.WriteLine(" |_| ");

            for (int i = 0; i < n; i++)
            {
                for (int col = n - 1; col >= 0; col--)
                {
                    if (col == i) Console.Write("/");
                    else Console.Write(" ");
                }
                Console.Write("|");
                for (int col = 0; col < n; col++)
                {
                    if (col == i) Console.Write("\\");
                    else Console.Write(" ");
                }
                Console.WriteLine();
            }


            for (int i = 0; i < n / 2; i++)
            {
                Console.Write("|");
                for (int col = 0; col < n - 1; col++)
                {
                    if (col == n / 2 - 1) Console.Write("@");
                    else Console.Write(" ");
                }
                Console.Write("|");
                for (int col = n - 1; col >= 0; col--)
                {
                    //int inv = n - 1 - col; //обръщане
                    if (col == n / 2 - 1) Console.Write("@");
                    else Console.Write(" ");
                }
                Console.WriteLine("|");
                //Console.WriteLine();
            }
            for (int i = 0; i < n / 2 ; i++)
            {
                for (int col = 0; col < n; col++)
                {
                    if (col == i) Console.Write("\\");
                    else Console.Write(" ");
                }
                Console.Write("|");
                for (int col = n - 1; col >= 0; col--)
                {
                    if (col == i) Console.Write("/");
                    else Console.Write(" ");
                }
                Console.WriteLine();
            }
            //for (int i = 0; i < length; i++)
            {

            }

        }
    }
}