08. On Time for the Exam

exam_hour = int(input())
exam_min = int(input())
arrival_hour = int(input())
arrival_min = int(input())

exam_all_min = (exam_hour * 60) + exam_min
arrival_all_min = (arrival_hour * 60) + arrival_min
diff_min = abs(arrival_all_min - exam_all_min)

if arrival_all_min > exam_all_min:
    print("Late")
    if diff_min >= 60:
        hour = diff_min // 60
        minutes = diff_min % 60
        print(f"{hour}:{minutes:02d} hours after the start")
    else:
        print(f"{diff_min} minutes after the start")
elif arrival_all_min == exam_all_min or diff_min <= 30:
    print("On time")
    if diff_min > 0:
        print(f"{diff_min} minutes before the start")
else:
    print("Early")
    if diff_min >= 60:
        hour = diff_min // 60
        minutes = diff_min % 60
        print(f"{hour}:{minutes:02d} hours before the start")
    else:
        print(f"{diff_min} minutes before the start")