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

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

            //First Rectangle's Coordinates:
            var x1 = 0;
            var y1 = 0;
            var x2 = 3 * h;
            var y2 = 1 * h;

            //Second Rectangle's Coordinates:
            var x3 = 1 * h;
            var y3 = 1 * h;
            var x4 = 2 * h;
            var y4 = 4 * h;

            //Internal Border's Coordinates For The Rectangles:
            var x5 = 1 * h;
            var y5 = 1 * h;
            var x6 = 2 * h;
            //Borders of The Lower Rectangle:
            var onLeftSide1 = ((x == x1) && (y >= y1 && y <= y2));
            var onRightSide1 = ((x == x2) && (y >= y1 && y <= y2));
            var onBottom1 = ((y == y1) && (x >= x1 && x <= x2));
            var onTopLeft1 = ((y == y2) && (x >= x1 && x <= x3));
            var onTopRight1 = ((y == y2) && (x >= x4 && x <= x2));

            //Borders of The Upper Rectangle Without Internal Border:
            var onLeftSide2 = ((x == x3) && (y >= y3 && y <= y4));
            var onRightSide2 = ((x == x4) && (y >= y3 && y <= y4));
            var onTop2 = ((y == y4) && (x >= x3 && x <= x4));



            var internalBorder = ((y == y5) && (x > x5) && (x < x6));

            var insideRectang1 = ((x > x1) && (x < x2) && (y > y1) && (y < y2));

            var insideRectang2 = ((x > x3) && (x < x4) && (y > y3) && (y < y4));

            if (internalBorder || insideRectang1 || insideRectang2)
            {
                Console.WriteLine("inside");
            }
            else if (onLeftSide1 || onRightSide1 || onBottom1 || onTopLeft1 || onTopRight1 || onLeftSide2 || onRightSide2 || onTop2)
            {
                Console.WriteLine("border");
            }
            else
            {
                Console.WriteLine("outside");
            }
        }
    }
}