PointInTheFigure

namespace PointInTheFigure
{
    using System;

    public static class PointInTheFigure
    {
        public static void Main()
        {
            int h = int.Parse(Console.ReadLine());
            int x = int.Parse(Console.ReadLine());
            int y = int.Parse(Console.ReadLine());

            bool border = (y == 0 && InRange(x, 0, 3 * h)); // horizonal bottom border
            border = border || ((x == 0 || x == 3 * h) && InRange(y, 0, h)); // add bottom vertical borders
            border = border || ((y == h) && (InRange(x, 0, h) || InRange(x, 2 * h, 3 * h))); // add top horizontal borders
            border = border || ((x == h || x == 2 * h) && InRange(y, h, 4 * h));// add top vertical borders
            border = border || ((y == 4 * h) && InRange(x, h, 2 * h)); // add top horizontal border

            if (border) { Console.WriteLine("border"); return; }

            bool inside = InRange(x, 0, 3 * h) && InRange(y, 0, h); // in base
            inside = inside || (InRange(x, h, 2 * h) && InRange(y, 0, 4 * h)); // add in pillar

            if (inside)
            {
                Console.WriteLine("inside");
            }
            else
            {
                Console.WriteLine("outside");
            }

            //bool outR1 = x < 0 || 3 * h < x || y < 0 || h < y;
            //bool outR2 = x < h || 2 * h < x || y < h || 4 * h < y;

            //bool inR1 = 0 < x && x < 3 * h && 0 < y && y < h;
            //bool inR2 = h < x && x < 2 * h && h < y && y < 4 * h;

            //bool commonBorder = (x > h && x < 2 * h) && y == h;

            //if (outR1 && outR2)
            //{
            //    Console.WriteLine("outside");
            //}
            //else if (inR1 || inR2 || commonBorder)
            //{
            //    Console.WriteLine("inside");
            //}
            //else
            //{
            //    Console.WriteLine("border");
            //}
        }

        public static bool InRange(double x, double x1, double x2) => (Math.Min(x1, x2) <= x) && (x <= Math.Max(x1, x2));

    }
}