OnTImeForThe Exam

using System;

public class Program
{
	public static void Main()
	{
		var hourExam = int.Parse(Console.ReadLine());
		var minuteExam = int.Parse(Console.ReadLine());
		var hourArrive = int.Parse(Console.ReadLine());
		var minuteArrive = int.Parse(Console.ReadLine());

		var hourExamInMinutes = hourExam*60;
		var hourArriveInMinutes = hourArrive*60;

		var hourExamTotal = hourExamInMinutes + minuteExam;
		var hourArriveTotal = hourArriveInMinutes + minuteArrive;


		if ((hourExamTotal - hourArriveTotal)>=0 && (hourExamTotal - hourArriveTotal)<=30)

			{
			Console.WriteLine("On time");
			}
		else if ((hourArriveTotal - hourExamTotal)>0)
			{
			Console.WriteLine("Late");
			}
		else

			{
			Console.WriteLine("Early");
			}

		if ((hourExamTotal - hourArriveTotal)>=0 && (hourExamTotal - hourArriveTotal)<60)
			{
			Console.WriteLine("{0} minutes before the start",Math.Abs(hourExamTotal - hourArriveTotal));
			}
		else if ((hourExamTotal - hourArriveTotal)>=60)
			{
			int hours = Math.Abs(hourExamTotal - hourArriveTotal)/60;
			int minutes = Math.Abs(hourExamTotal - hourArriveTotal)%60;


			Console.WriteLine("{0}:{1:00} hours before the start",hours, minutes);
			}

		else if ((hourArriveTotal - hourExamTotal) >=0 && (hourArriveTotal - hourExamTotal) <60)
			{
			Console.WriteLine("{0} minutes after the start",Math.Abs(hourExamTotal - hourArriveTotal));
			}
		else if ((hourArriveTotal -hourExamTotal>=60))
			{
			int hours = Math.Abs(hourExamTotal - hourArriveTotal)/60;
			int minutes = Math.Abs(hourExamTotal - hourArriveTotal)%60;


			Console.WriteLine("{0}:{1:00} hours after the start",hours, minutes);
			}
	}
}