14. Time + 15 Minutes

/**
 * Project: Simple_Conditions - created by borkins on 2017-03-25.
 */

import java.util.Scanner;

public class _14_TimePlus_15_Minutes
{
    public static void main(String[] args)
    {
        Scanner console = new Scanner(System.in);

        int hours = Integer.parseInt(console.nextLine());
        int minutes = Integer.parseInt(console.nextLine());

        minutes += 15;

        System.out.printf("%d:%02d", ((hours + (minutes / 60)) % 24), (minutes % 60));
    }
}