from datetime import datetime, timedelta
startDate = datetime(2015, 1, 1)
happyDay = 0
for i in range(365):
    addedDate = startDate + timedelta(days=+i)
    day = addedDate.day
    month = addedDate.month
    if len(str(day))==2:
        digits = [int(digit) for digit in str(day)]
        if month == (digits[0] + digits[1]):
            happyDay+=1
    else:
        if month == day:
            happyDay+=1
    i+=1
print(happyDay)