using System;

namespace OnTimeForTheExam
{
    class Program
    {
        static void Main(string[] args)
        {
            int examHour = int.Parse(Console.ReadLine());
            int examMinutes = int.Parse(Console.ReadLine());
            int arrivalHour = int.Parse(Console.ReadLine());
            int arrivalMinutes = int.Parse(Console.ReadLine());

            int timeExam = examHour * 60 + examMinutes;
            int timeArrival = arrivalHour * 60 + arrivalMinutes;
            int difference = 0;
            int hours = 0;
            int minutes = 0;

            if (timeArrival > timeExam)
            {
                Console.WriteLine("Late");
                difference = timeArrival - timeExam;
                if (difference < 60)
                {
                    Console.WriteLine($"{difference} minutes after the start");
                }

                else if (difference >= 60)
                {
                    hours = difference / 60;
                    minutes = difference % 60;
                    Console.WriteLine($"{hours}:{minutes:d2} hours after the start");
                }

            }

            else if (timeArrival == timeExam || (timeArrival >= timeExam - 30 && timeArrival < timeExam))
            {
                Console.WriteLine("On time");
                difference = timeExam - timeArrival;
                if (difference <= 30)
                {
                    Console.WriteLine($"{difference} minutes before the start");
                }
            }

            else if (timeArrival < timeExam - 30)
            {
                Console.WriteLine("Early");
                difference = timeExam - timeArrival;
                if (difference < 60)
                {
                    Console.WriteLine($"{difference} minutes before the start");
                }
                else if (difference >= 60)
                {
                    hours = difference / 60;
                    minutes = difference % 60;
                    Console.WriteLine($"{hours}:{minutes:d2} hours before the start");
                }
            }

        }
    }
}