L04u14_OnTimeForTheExam

package Uprajneniq;

import java.util.Scanner;

/**
 * Created by todor on 24.01.2017 г..
 */
public class u14_OnTimeForTheExam {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int examHours = Integer.parseInt(scan.nextLine());
        int examMinutes = Integer.parseInt(scan.nextLine());
        int arrivalHours = Integer.parseInt(scan.nextLine());
        int arrivalMinutes = Integer.parseInt(scan.nextLine());

        int examHoursToMin = (examHours * 60) + examMinutes;
        int arrivalHoursToMin = (arrivalHours * 60) + arrivalMinutes;
        int minDifference = arrivalHoursToMin - examHoursToMin;

        if (minDifference > 0){
            int hours = minDifference/60;
            int minutes = minDifference%60;
            if (hours > 0)
                System.out.printf("Late %d:%02d hours after the start", hours, minutes);
            else
                System.out.printf("Late %d minutes after the start", minutes);
        }
        else if (minDifference < -30){
            int hours = Math.abs(minDifference)/60;
            int minutes = Math.abs(minDifference)%60;
            if (hours > 0)
                System.out.printf("Early %d:%02d hours before the start", hours, minutes);
            else
                System.out.printf("Early %d minutes before the start", minutes);
        }
        else {
            int minutes = Math.abs(minDifference);
            if (minDifference == 0)
                System.out.println("On time");
            else
                System.out.printf("On time %d minutes before the start", minutes);
        }

    }
}