import java.util.Scanner;

public class PointInAFigure {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        int h = Integer.parseInt(scanner.nextLine());
        int x = Integer.parseInt(scanner.nextLine());
        int y = Integer.parseInt(scanner.nextLine());

        if ((x >= 0 && x <= (3 * h)) && y == 0) {
            System.out.println("border");
        } else if ((x >= 0 && x <= h) && (y == h)) {
            System.out.println("border");
        } else if ((x == (2 * h) && (y >= h && y <= (4 * h)))) {
            System.out.println("border");
        } else if ((x > h && x < 2 * h) && (y == (4 * h))) {
            System.out.println("border");
        } else if (x == 0 && (y >= 0 && y <= h)) {
            System.out.println("border");
        } else if (x == h && (y >= h && y <= (4 * h))) {
            System.out.println("border");
        } else if (x == (3 * h) && (y >= 0 && y <= h)) {
            System.out.println("border");
        } else if ((x >= (2 * h) && (x <= (3 * h)) && y == h)) {
            System.out.println("border");
        }
        else if ((x>h && x<2*h) && (y>h && y<(4*h))){
            System.out.println("inside");
        } else if ((x>0 && x<(3*h)) && (y>0 && y<h)){
            System.out.println("inside");
        } else if (x>h && x<2*h && y==h){
            System.out.println("inside");
        }
        else {
            System.out.println("outside");
        }
    }
}