On_Time_For_The_Exam

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

namespace On_Time_For_The_Exam
{
    class Program
    {
        static void Main(string[] args)
        {
            int HoursExam = int.Parse(Console.ReadLine());
            int MinutesExam = int.Parse(Console.ReadLine());
            int HoursArrival = int.Parse(Console.ReadLine());
            int MinutesArrival = int.Parse(Console.ReadLine());
            int resulthe = HoursExam * 60 + MinutesExam;
            int resultha = HoursArrival * 60 + MinutesArrival;
            int resultminutes = resultha - resulthe;
            int hours = 0;
            if (resultminutes <= 0&&resultminutes>=-30)
            {
                if (resultminutes == -60)
                {
                    hours += 1;
                }
                hours = resultminutes / 60;
                resultminutes = resultminutes % 60;
                Console.WriteLine("On time");
                Console.WriteLine("{0} minutes before the start",Math.Abs(resultminutes));
            }
            else if(resultminutes<-30)
            {
                if (resultminutes == -60)
                {
                    hours += 1;
                }
                hours = resultminutes / 60;
                resultminutes = resultminutes % 60;
                Console.WriteLine("Early");
                if (Math.Abs(hours) >= Math.Abs(1))
                {
                    Console.WriteLine("{0}:{1:00} hours before the start", Math.Abs(hours), Math.Abs(resultminutes));
                }
                else
                {
                    Console.WriteLine("{0} minutes before the start", Math.Abs(resultminutes));
                }

            }
            else if(resultminutes>0)
            {
                if (resultminutes == -60)
                {
                    hours += 1;
                }
                hours = resultminutes / 60;
                resultminutes = resultminutes % 60;
                Console.WriteLine("Late");
                if (Math.Abs(hours) >= Math.Abs(1))
                {
                    Console.WriteLine("{0}:{1:00} hours after the start", Math.Abs(hours), Math.Abs(resultminutes));
                }
                else
                {
                    Console.WriteLine("{0} minutes after the start", Math.Abs(resultminutes));
                }
            }
        }
    }
}