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

namespace HM_4_Judge
{
    class Program
    {
        static void Main(string[] args)
        {
            var h = decimal.Parse(Console.ReadLine());
            var x = decimal.Parse(Console.ReadLine());
            var y = decimal.Parse(Console.ReadLine());


            decimal x1 = 3 * h;
            decimal y1 = h;
            decimal x2 = h;
            decimal y2 = 4 * h;

            if (x > 0 && x < x1 && y > 0 && y < y1)
            {
                Console.WriteLine("inside");
            }
            else if (x > h && x < 2*h && y > 0 && y < y2)
            {
                Console.WriteLine("inside");
            }
            else if (x >= 0 && x <=3*h  && y >= 0 && y <= h)
            {
                Console.WriteLine("border");
            }
            else if (x >= h && x <= 2*h && (y == 0 || (y >=h && y <= 4*h)) )
            {
                Console.WriteLine("border");
            }
            else
            {
                Console.WriteLine("outside");
            }


        }
    }
}