Arriving on time

import math
examine_hour = int (input())
examine_minutes = int (input())
examineminutes=examine_hour*60+examine_minutes
arriving_hour = int (input())
arriving_minutes = int (input())
arrivingminutes=arriving_hour*60+arriving_minutes
if arrivingminutes<examineminutes-30:
    print("Early")
elif arrivingminutes>examineminutes:
    print("Late")
else:
    print("On time")
hours=math.floor(abs((examineminutes-arrivingminutes)/60))
minutes=abs((examineminutes-arrivingminutes)%60)
if 1<arrivingminutes<examineminutes:
    if hours==0:
            print(f"{minutes} minutes before the start")
    else :
        if minutes < 10:
            print(f"{hours}:0{minutes} hours before the start")
        else:
            print(f"{hours}:{minutes} hours before the start")
elif 1<examineminutes<arrivingminutes:
    hours = math.floor(abs((arrivingminutes - examineminutes) / 60))
    minutes = abs((arrivingminutes - examineminutes) % 60)
    if hours == 0:
        print(f"{minutes} minutes after the start")
    else:
        if minutes < 10:
            print(f"{hours}:0{minutes} hours after the start")
        else:
            print(f"{hours}:{minutes} hours after the start")