Exam 7. Wine Glass

using System;
using System.Globalization;
using System.Threading;

public class PrintWineGlass
{
    public static void Main()
    {
        Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
        checked
        {
            int length = int.Parse(Console.ReadLine());

            int asteriskSeqWidth = length - 2;
            string asteriskSequence;
            int dotSeqWidth = 0;
            string outerDotSequence;
            string hyphenSequence = new string('-', length);
            for (int row = 0; row < length; row++)
            {
                if (row < length / 2)
                {
                    asteriskSequence = new string('*', asteriskSeqWidth);
                    outerDotSequence = new string('.', dotSeqWidth);
                    Console.WriteLine("{0}\\{1}/{0}", outerDotSequence, asteriskSequence);
                    dotSeqWidth++;
                    asteriskSeqWidth -= 2;
                }
                else if (row == length - 1 || (length >= 12 && row == length - 2))
                {
                    Console.WriteLine(hyphenSequence);
                }
                else
                {
                    dotSeqWidth = (length / 2) - 1;
                    outerDotSequence = new string('.', dotSeqWidth);
                    Console.WriteLine("{0}||{0}", outerDotSequence);
                }
            }
        }
    }
}