import datetime
count = 0
a1 = datetime.date(2015,1,1)
f = lambda x: sum(map(int, list("{:0>2}".format(x))))
for i in range(1,365):
    if a1.day < 10:
        if (a1.month == (0 + a1.day)):
            count += 1


    elif (a1.month == f(a1.day)):
        count += 1
    a1 += datetime.timedelta(days=1)

print(count)