using System;

public class Program

{

    public static void Main()

    {

        /*

        int n = Convert.ToInt32(Console.ReadLine());

        for (int row = 1; row <= n; row++)

        {

            for (int col = 1; col <= n; col++)

            {

                Console.Write("* ");

            }

            Console.WriteLine();

        }

        */

        /*

        int n = Convert.ToInt32(Console.ReadLine());

        for (int row = 1; row <= n; row++)

        {

            Console.Write("*");

            for (int col = 1; col < n; col++)

            {

                Console.Write(" *");

            }

            Console.WriteLine();

        }

        */

        /*

        int n = 10; 

        for (int row = 1; row <= n; row++)

        {

            int spaces = Math.Abs(n / 2 - row);

            int stars = n/2 - spaces;

            for (int col = 1; col <= spaces; col++)

                Console.Write(" ");

            for (int col = 1; col <= stars; col++)

                Console.Write("* ");

            Console.WriteLine();

        }

        */

        //Print 10 x 10 stars

        /*

        for (int i = 1; i <= 10; i++)

        {

            Console.WriteLine(new string('*', 10));

        } */

        /*

        for (int row = 0; row < 10; row++)

        {

            for (int col = 0; col < 10; col++)

            {

                Console.Write("* ");

            }

            Console.WriteLine();

        }

        */

        /*

        int x = Convert.ToInt32(Console.ReadLine());

        for (int row = 1; row <= x; row++)

        {

            Console.WriteLine(new string('*', x));

        }

        */ 

        /*

        int x2 = Convert.ToInt32(Console.ReadLine());

        for (int row = 1; row <= x2; row++)

        {

            for (int col = 1; col <= x2; col++)

            {

                Console.WriteLine("* ");

            }

        }

        */

        //Ex: Triangle Made of Dollars

        /*

        int m = Convert.ToInt32(Console.ReadLine());

        for (int row = 1; row <= m; row++)

        {

            //Console.WriteLine(new string('$', row));

            //for (int col = 1; col <= row; col++)

                //Console.Write("$_");

            //Console.WriteLine(); 

            Console.Write("$");

            for (int col = 1; col < row; col++)

                Console.Write("_$");

            Console.WriteLine();

        } */

        //Ex: Square Frame 

        int n = Convert.ToInt32(Console.ReadLine());

        for (int row = 0; row < n; row++)

        {

                for (int col = 0; col < n; col++)

                {

                    if (row == 0 && col == 0 || row == 0 && col == (n-1) || 

                        row == (n-1) && col == 0 || row == (n-1) && col == (n-1))

                    {

                        Console.Write("+");

                    }

                    else if (col == 0 || col == (n-1))

                    {

                        Console.Write("|");

                    }

                    else 

                        Console.Write("-");

                }

            Console.WriteLine();

​

        }

    }

​

}