from datetime import date,timedelta
d = date(2015, 1, 1)
end = date(2016, 1, 1)
delta = timedelta(days=1)
ans = 0
while d < end:
    month = d.month
    day = d.day
    if month == sum(divmod(day, 10)): ans += 1
    d += delta
print(ans)