Point in Figure Second Solution

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace point_in_figure
{
    class Program
    {
        static void Main(string[] args)
        {
            int h = int.Parse(Console.ReadLine());
            int x = int.Parse(Console.ReadLine());
            int y = int.Parse(Console.ReadLine());
            bool inside = (x > 0 && x < 3 * h) && (y > 0 && y < h)
                || (x > 0 && x > h) && (y > 0 && x < 2*h && y < 4 * h);

			 // Create a bool variable to check if point is exactly on the border

            bool onRegtangle = (
                   y == h && (x >= 0 && x <= h)
                || y == 0 && (x >= 0 && x <= 3 * h)
                || (x == 0 && y >= 0 && y <= h)
                || (x == 3 * h && y >= 0 && y <= h)
                || (y == 4 * h && (x >= h && x <= 2 * h))
                ||  y == h && (x >= 2*h && x <= 3*h)
                || (x == h && y >= h && y <= 4 * h)
                || (x == 2 * h && y >= h && y <= 4 * h));
            string result = "";

            if (inside)
            {
                result = "inside";
            }
            else if (!inside && !onRegtangle)
            {
                result = "outside";
            }
            else
            { result = "border"; }

            Console.WriteLine(result);
        }
    }
}