using System;
using System.Collections.Generic;
using System.Linq;
using static System.Console;

class Program
{
    static void Main()
    {
        var abs = ReadLine().Split();
        WriteLine($"{new DateTime(2, 1, 1, int.Parse(abs[0]), int.Parse(abs[1]), 0).AddHours(double.Parse(abs[2].Substring(3)) - 9):HH:mm}");
    }
}