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

namespace Точка_във_фигурата
{
    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 x1 = 0;
            var y1 = 0;
            var x2 = 3 * h;
            var y2 = h;
            bool insidefigure1 = x > x1 && x < x2 && y > y1 && y < y2;
            bool outsidefigure1 = x < x1 || x > x2 || y < y1 || y > y2;

            var x3 = h;
            var y3 = h;
            var x4 = 2 * h;
            var y4 = 4 * h;
            bool insidefigure2 = x > x3 && x < x4 && y > y3 && y < y4;
            bool outsidefigure2 = x < x3 || x > x4 || y < y3 || y > y4;

            bool insideborder = x > x3 && x < x4 && y == y3;

            if (insidefigure1 || insidefigure2 || insideborder)
            {
                Console.WriteLine("inside");
            }
            else if (outsidefigure1 && outsidefigure2)
            {
                Console.WriteLine("outside");
            }
            else
            {
                Console.WriteLine("border");
            }
        }
    }
}