import datetime
from months import *
now = datetime.datetime.now()
while 1:
    year = now.year
    month = now.month
    day = now.day
    dob = raw_input("Year: ")
    month1 = raw_input("Month: ")
    day1 = raw_input("Day: ")

    dob = int(dob)
    year = int(year)
    month1 = int(month1)
    day = int(day)

    est = divmod((year * 12 + month) - (dob * 12 + month1), 12)
    print est