using System;
using System.Globalization;

namespace BeerTime
{
    class Program
    {
        static void Main(string[] args)
        {
            string inputTime = Console.ReadLine();

            string dateFormat = string.Format("{0:HH:mm tt}", DateTime.Parse(inputTime));

            DateTime dateTime = DateTime.Parse(date);
            DateTime startTime = DateTime.Parse("13:00");
            DateTime endTime = DateTime.Parse("03:00");
            DateTime checkMidNight = DateTime.Parse("23:59");
            DateTime checkMidNight2 = DateTime.Parse("00:00");
            string datet = string.Format("{0:HH:mm tt}", DateTime.Parse(inputTime));

            if ((dateTime >= startTime) && (dateTime <= checkMidNight) || (dateTime < endTime) && (dateTime >= checkMidNight2))
            {
                Console.WriteLine("beer time");
            }
            else
            {
                Console.WriteLine("nonbeer time");
            }







        }
    }
}