04. Time After 30 Minutes

import java.util.Scanner;

class TimeAfter30Minutes {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int hours = Integer.parseInt(scanner.nextLine()),
            minutes = Integer.parseInt(scanner.nextLine()),
            totalMinutes = hours * 60 + minutes + 30,
            hourTotal = totalMinutes / 60 % 24,
            minuteTotal = totalMinutes % 60;

        System.out.printf("%d:%02d", hourTotal, minuteTotal);
    }
}