PBE-Coding101Exam-6March2016-OnTimeForTheExam_AngelKalinkov

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 examMinutes = Integer.parseInt(scanner.nextLine());
        int arriveHour = Integer.parseInt(scanner.nextLine());
        int arriveMinutes = Integer.parseInt(scanner.nextLine());

        String late = "Late";
        String onTime = "On time";
        String early = "Early";
        int examTimeToMin = examHour * 60 + examMinutes;
        int arriveTimeToMin = arriveHour * 60 + arriveMinutes;
        int difference = arriveTimeToMin - examTimeToMin;

        String studentArrival = late;
        if (difference < -30) {
            studentArrival = early;
        } else if (difference <= 0) {
            studentArrival = onTime;
        }
        String result = "";
        if (difference != 0) {
            int hoursDifference = Math.abs(difference / 60);
            int minutesDifference = Math.abs(difference % 60);
            if (hoursDifference > 0) {
                result = String.format("%d:%02d hours", hoursDifference, minutesDifference);
            } else {
                result = minutesDifference + " minutes";
            }
            if (difference < 0) {
                result += " before the start";
            } else {
                result += " after the start";
            }
        }
        System.out.println(studentArrival);
        if (!result.isEmpty()) {
            System.out.println(result);
        }
    }
}