import datetime

day = datetime.datetime.strptime("2015-1-1","%Y-%m-%d")
count = 0
for i in range(365):
  allday = allday + datetime.timedelta(days=1)
  month = allday.month
  day = allday.day
  if month == int(day / 10) + day % 10:
    count += 1
print(count)