01.ExamSchedule

using System;
class ExamSchedule
{
    static void Main()
    {
        int startHour = int.Parse(Console.ReadLine());
        int startMinures = int.Parse(Console.ReadLine());
        string partOfTheDay = Console.ReadLine();
        int durationHours = int.Parse(Console.ReadLine());
        int durationMinutes = int.Parse(Console.ReadLine());

        if (partOfTheDay == "PM")
        {
            startHour = startHour + 12;
            if (startHour==24)
            {
                startHour = 0;
            }
        }
        DateTime startTime = new DateTime(2015,11,10,startHour,startMinures,0);
        DateTime endTime = startTime.AddHours(durationHours).AddMinutes(durationMinutes);
        Console.WriteLine("{0:hh:mm:tt}",endTime);
    }
}