ddvdvdv

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main()
        {
            var n = int.Parse(Console.ReadLine());

            var vJava = new string('~', ((n * 2) +4));
            var sJava = new string(' ', n - 1);
            var java = new string('~', n);

            var vformat = "|{0}|{1}|";

            var format = "|{0}JAVA{0}|{1}|";

            for (int i = 1; i <= n; i++) // parata
            {
                Console.Write(new string(' ',n));
                Console.Write(new string('~',1));
                Console.Write(new string(' ',1));
                Console.Write(new string('~', 1));
                Console.Write(new string(' ', 1));
                Console.Write(new string('~', 1));

                Console.WriteLine();
            }

            Console.WriteLine(new string('=',(n*3)+5));

            for (int i = 1; i <= n - 2; i++) // chasha - gorna chast
            {
                if (i == n / 2)
                {
                    Console.WriteLine(format,java,sJava);
                }
                else
                {
                    Console.WriteLine(vformat, vJava, sJava);
                }
            }

            Console.WriteLine(new string('=', (n * 3)+5));

            for (int i = 1; i <= n; i++)      // chasha - dolna chast
            {
                Console.Write(new string(' ', i-1));
                Console.Write('\\');
                Console.Write(new string('@',((n+4)-i)));
                Console.Write(new string('@',(n+2)-i));
                Console.WriteLine('/');
            }

            Console.WriteLine(new string('=',(n*2)+6));
        }
    }
}