The Explorer

using System;

public class Program
{
    public static void Main()
    {
        int n = int.Parse(Console.ReadLine());
        int hight = n;
        int wigth = n;
        int innerTicks = 1;
        int outerTicks = (n - 2 - innerTicks)/2;
        char ticks = '-';
        char stars = '*';

        Console.WriteLine(new string(ticks,(n-1)/2) + "*" + new string(ticks,(n-1)/2));

        for (int i = 0; i < n - 2; i++)
        {
            if (i < (n - 1)/2 - 1)
            {
                Console.WriteLine(new string(ticks,outerTicks) + stars + new string(ticks,innerTicks) + stars + new string(ticks,outerTicks));
                innerTicks+=2;
                outerTicks--;
            }
            else if (i > (n - 1)/2 - 1)
            {
                innerTicks-=2;
                outerTicks++;
                Console.WriteLine(new string(ticks,outerTicks) + stars + new string(ticks,innerTicks) + stars + new string(ticks,outerTicks));
            }
            else
            {
                Console.WriteLine(new string(stars,1) + new string(ticks,n-2) + new string(stars,1));
            }
        }
        Console.WriteLine(new string(ticks,(n-1)/2) + "*" + new string(ticks,(n-1)/2));
    }
}