using System;

public class Program

{

    public static void Main()

    {

            int i, j, numOfpyr, numOfslash;

            Boolean reverseSlash;

            Console.WriteLine("enter pyramid size:");

            numOfpyr = int.Parse(Console.ReadLine());

            reverseSlash = true;

            Console.WriteLine("Here is your pyramid:");

            for (i = 1; i <= numOfpyr * 2; i++)

            {

                if (i <= numOfpyr)

                {

                    numOfslash = i;

                }

                else

                {

                    numOfslash = 2 * numOfpyr - i + 1;

                }

                if (i == numOfpyr + 1)

                {

                    reverseSlash = false;

                }

                for (j = 1; j <= numOfslash ; j++)

                {

                    if (reverseSlash)

                    {

                        Console.Write("\\");

                    }

                    else 

                    {

                        Console.Write("/");

                    }

                }

                Console.WriteLine();

            }

    }

}