On Time for the Exam

import java.util.Scanner;

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

        int examHour = Integer.parseInt(scanner.nextLine());
        int examMinute = Integer.parseInt(scanner.nextLine());
        int arriHour = Integer.parseInt(scanner.nextLine());
        int arriveMinute = Integer.parseInt(scanner.nextLine());

        int examTime = examHour * 60 + examMinute;
        int arriveTime = arriHour * 60 + arriveMinute;

        if (arriveTime > examTime) {
            System.out.println("Late");
            int lateTime = arriveTime - examTime;
            if (lateTime < 60) {
                System.out.printf("%d minutes after the start", lateTime);
            } else {
                int lateHour = lateTime / 60;
                int lateMinutes = lateTime % 60;
                System.out.printf("%d:%02d hours after the start", lateHour, lateMinutes);
            }
        } else if (examTime - arriveTime <= 30) {
            System.out.println("On time");
            int onTime = examTime - arriveTime;
            if (onTime != 0) {
                System.out.printf("%d minutes before the start", onTime);
            }
        } else if (examTime - arriveTime > 30) {
            System.out.println("Early");
            int early = examTime - arriveTime;
            if (early < 60) {
                System.out.printf("%d minutes before the start", early);
            } else {
                int earlyHour = early / 60;
                int earlyMinutes = early % 60;
                System.out.printf("%d:%02d hours before the start", earlyHour, earlyMinutes);
            }
        }
    }
}