правоъгълник

using System;

public class Program
{
    public static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        Console.Write("+");
        Console.Write(new string('-', n-2));
        Console.WriteLine("+");
        for (int i = 0; i < n-2; i++)
        {
            Console.Write("|");
            Console.Write(new string ('-', n-2));
            Console.WriteLine("|");
        }
        Console.Write("+");
        Console.Write(new string('-', n-2));
        Console.WriteLine("+");
    }
}