using System;

public class Program

{

    public static void Main()

    {

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

            PrintBorder(n);

            PrintMiddleRow(n);

            PrintBorder(n);

        }

        static void PrintBorder(int n)

        {           

            Console.Write(new string('-', n *2));

            Console.WriteLine();

        }

        static void PrintMiddleRow(int n)

        {

            for (int j = 0; j < n-2; j++)

            {

            Console.Write('-');

            for (int i = 1; i <= n - 1; i++)

            {

                Console.Write("\\/");                

            }

                Console.Write('-');

            Console.WriteLine();

            }

        }

}