sfaf

using System;
using System.Globalization;
class Program
{
    static void Main()
    {
        int examHour = int.Parse(Console.ReadLine());
        int examMinute = int.Parse(Console.ReadLine());
        int comeHour = int.Parse(Console.ReadLine());
        int comeMinute = int.Parse(Console.ReadLine());

        int start = examHour * 60 + examMinute;
        int come = comeHour * 60 + comeMinute;


        if (start > come && start - come < 60 && start - come <= 30)
        {
            Console.WriteLine("On time {0} minutes before the start", start - come);

        }
        else if (start > come && start - come > 60 && start - come <= 30)
        {
            Console.WriteLine("On time {0}:{1} hours before the start", (start - come) / 60, (start - come) % 60);
        }
        else if (start < come && come - start < 60)
        {
            Console.WriteLine("Late {0} minutes after the start", come - start);
        }
        else if (start < come && come - start >= 60)
        {
            Console.WriteLine("Late {0}:{1} hours after the start", (come - start) / 60, (come - start) % 60);
        }
        else if (start == come)
        {
            Console.WriteLine("On time");
        }
        else if (start > come && start - come > 30 && start - come < 60)
        {
            Console.WriteLine("Early {0} minutes before the start", start - come);
        }
        else if (start > come && start - come > 30 && start - come > 60)
        {
            Console.WriteLine("Early {0}:{1} hours before the start", (start - come) / 60, (start - come) % 60);
        }
        else if (start > come && start - come > 30 && start - come == 60)
        {
            Console.WriteLine("Early {0}:00 hours before the start", (start - come) / 60);
        }
    }
}