using System;

public class Program

{

    public static void Main()

    {

        int hours = int.Parse(Console.ReadLine());

        int minutes = int.Parse(Console.ReadLine());

        int newMinutes = minutes + 15;

        if (newMinutes>59)

        {

            newMinutes -= 60;

            hours+= 1;

            if(hours>23)

            {

                hours-=24;

            }

        }

        string newMinutesToString = "0" + newMinutes.ToString();

    }

    else

    {

        newMinutesToString = NewMinutes.ToString();

    }

}