Пета

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

namespace Exam
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int columns = n * 6;
            int middleRows = n % 2 == 0 ? n - 1 : n - 2;
            int rows = 2 * n + middleRows;
            int margin = 0;
            int lastmiddle = 0;
            int emptySpaces = 0;
            for (int i = 0; i < n; i ++)
            {

                string filling = new string('-', i * 6);
                lastmiddle = i * 6;
                string emptySpace = new string(' ', (columns / 2) - (n - i) - margin);
                emptySpaces = (columns / 2) - (n - i) - margin;
                string turnedLeft = new string('\\', n - i);
                string turnedRight = new string('/', n - i);
                Console.WriteLine(emptySpace + turnedLeft + filling + turnedRight + emptySpace);
                margin += 3;
            }
            string a = new string('-', n - 1);
            string b = new string('#', columns - ((n - 1) * 2 + 2));
            string middleSpace = ("|" + a + b + a + "|");
            for (int i = 0; i <  middleRows / 2 + 1; i++)
            {
                Console.WriteLine(middleSpace);
            }
            a = new string('~', n - 1);
            int middleName = columns - ((n - 1) * 2 + 2);
            b = new string('/', (middleName - 6) / 2);

            string c = new string('\\', (middleName - 6) / 2);
            string name = ("|" + a + b + " ESTD " + c + a + "|");
            Console.WriteLine(name);
            for (int i = 0; i < middleRows / 2 + 1; i++)
            {
                Console.WriteLine(middleSpace);
            }
            margin = 0;
            int middleFilling = lastmiddle;

            for (int i = 0; i < n; i++)
            {

                string filling = new string('-', middleFilling);
                string emptySpace = new string(' ', emptySpaces);
                string turnedLeft = new string('\\', i + 1);
                string turnedRight = new string('/', i + 1 );
                Console.WriteLine(emptySpace + turnedLeft + filling + turnedRight + emptySpace);
                margin += 3;
                middleFilling -= 6;
                emptySpaces += 2;
            }
        }
    }
}