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

namespace test
{
    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());

            var firstRectangle = (x > h && x < 2 * h && y >= h && y < 4 * h);
            var secondRectangle = (x > 0 && x < 3 * h && y > 0 && y < h);

            var firstTop = (y == 4 * h && x >= h && x <= 2 * h);      //(y == 4*h && x >= h && x <= 2*h)
            var firstLeft = (x == h && y >= h && y <= 4 * h);      //(x == h && y >= h && y <= 4*h )
            var firstRight = (x == 2 * h && y >= h && y <= 4 * h);   //(x == 2*h && y >= h && y <= 4*h)
            var secondUpLeft = (y == h && x >= 0 && x <= h);           //(y == h && x >= 0 && x <= h)
            var secondUpRight = (y == h && x >= 2 * h && x <= 3 * h);   //(y == h && x >= 2*h && x <=3*h)
            var secondLeft = (x == 0 && y >= 0 && y <= h);           //(x == 0 && y >=0 && y <= h )
            var secondRight = (x == 3 * h && y >= 0 && y <= h);    //(x == 3*h && y <=h && y >=0)
            var secondDown = (y == 0 && x >= 0 && x <= 3 * h);      //(y == 0 && x >= 0 && x <= 3*h)


            if (firstRectangle|| secondRectangle)
            {
                Console.WriteLine("inside");
            }
            else if (firstTop || firstLeft || firstRight || secondUpLeft || secondUpRight || secondLeft || secondRight || secondDown)
            {
                Console.WriteLine("border");
            }
            else
            {
                Console.WriteLine("outside");
            }


        }
    }
}