using System;

public class Program

{

    public static void Main()

    {

        int a = int.Parse(Console.ReadLine());

        int b = int.Parse(Console.ReadLine());

        if (a = b)

        {

            Console.WriteLine("bingo");

        }

        else if (a < b)

        {

            Console.WriteLine("nagore");

        }

        else (a > b)

        {

            Console.WriteLine("nadolu");

        }

    }

}