Java

using System;

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

            int width = 3 * n + 6;
            int heght = 3 * n + 1;


            int spacesCount = width / 3 -2;
            string spaces = new string(' ', spacesCount);


            for (int i = 0; i < n; i++)
            {
                Console.WriteLine($"{spaces}~ ~ ~");
            }

            int equalsSignCount = width - 1 ;
            string equalsSign = new string('=', equalsSignCount);

            Console.WriteLine($"{equalsSign}");

            for (int i = 0; i < n -2; i++)
            {
               if (i == n / 2 - 1)
                {
                    Console.Write("|");
                    for (int j = 0; j < n; j++)
                    {
                        Console.Write("~");
                    }

                    Console.Write("JAVA");

                    for (int j = 0; j < n; j++)
                    {
                        Console.Write("~");
                    }
                    Console.Write("|");
                    for (int s = 0; s < n - 1; s++)
                    {
                        Console.Write(" ");
                    }
                    Console.Write("|");

                    Console.WriteLine();
                }
                else
                {
                    Console.Write("|");

                    for (int j = 0; j < n * 2 + 4; j++)
                    {
                        Console.Write("~");
                    }
                    Console.Write("|");

                    for (int s = 0; s < n - 1; s++)
                    {
                        Console.Write(" ");
                    }
                    Console.Write("|");

                    Console.WriteLine();
                }
            }


            Console.WriteLine($"{equalsSign}");


            for (int i = 1; i <= n; i++)
            {
                for (int s = 0 - i; s < -1 ; s++)
                {
                    Console.Write(" ");
                }
                Console.Write("\\");

                for (int r = 0 + i; r < n; r++)
                {
                    Console.Write("@");
                }

                Console.Write ("@@@@@@");


                for (int r = 0 + i; r < n; r++)
                {
                    Console.Write("@");
                }
                Console.Write("/");

                Console.WriteLine();
            }

            int equalsSignCountLast = equalsSignCount - n + 1;
            string equalsSignLast = new string('=', equalsSignCountLast);


                Console.WriteLine($"{equalsSignLast}");
        }
    }
}