using System;
using System.Threading;


class ExamSchedule
{
    static void Main()
    {

        string startHours = Console.ReadLine();
        string startMinutes = Console.ReadLine();
        string startPartOfTheDay = Console.ReadLine();
        int durationHours = int.Parse(Console.ReadLine());
        int durationMinutes = int.Parse(Console.ReadLine());

        DateTime startTime = DateTime.Parse(startHours + ":" + startMinutes + " " + startPartOfTheDay);
        startTime = startTime.AddHours(durationHours);
        startTime = startTime.AddMinutes(durationMinutes);
        Console.WriteLine("{0:hh:mm tt}",startTime);
    }
}