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

namespace ConsoleApp17
{
    class Program
    {
        static void Main(string[] args)
        {
            int examHours = int.Parse(Console.ReadLine());
            int examMinutes = int.Parse(Console.ReadLine());
            int arrivalHours = int.Parse(Console.ReadLine());
            int arrivalMinutes = int.Parse(Console.ReadLine());
            int examTime = (examHours * 60) + examMinutes;
            int arivalTime = (arrivalHours * 60) + arrivalMinutes;
            int timeDifference = examTime - arivalTime;
            int otherdifference = arivalTime - examTime;
            if (timeDifference >= 0 && timeDifference <= 30)
            {
                if (timeDifference == 0)
                {
                    Console.WriteLine("On time");
                }
                else if (timeDifference > 0 && timeDifference <= 30)
                {
                    Console.WriteLine("On time");
                    Console.WriteLine("{0} minutes before the start", timeDifference);
                }
            }
            else if (timeDifference > 30 && timeDifference <= 59)
            {
                Console.WriteLine("Early");
                Console.WriteLine("{0} minutes before the start", timeDifference);
            }
            else if (timeDifference > 59)
            {
                int hours = timeDifference / 60;
                int min = timeDifference % 60;
                Console.WriteLine("Early");
                if (min < 10)
                {
                    Console.WriteLine("{0}:0{1} hours before the start", hours, min);
                }
                else
                {
                    Console.WriteLine("{0}:{1} hours before the start", hours, min);
                }
            }
            else if (otherdifference <= 59)
            {
                Console.WriteLine("Late");
                Console.WriteLine("{0} minutes after the start", otherdifference);
            }
            else if (otherdifference > 59)
            {
                int hours = otherdifference / 60;
                int min = otherdifference % 60;
                Console.WriteLine("Late");
                if (min < 10)
                {
                    Console.WriteLine("{0}:0{1} hours after the start", hours, min);
                }
                else
                {
                    Console.WriteLine("{0}:{1} hours after the start", hours, min);
                }
            }
        }
    }
}