import calendar

day_year = []
for i in range(1,13):
    _ , lastday = calendar.monthrange(2015,i)
    day_year.append(lastday)
        
day_num = []
for i in range(1,32):
    kazu = 0
    for j in str(i):
        kazu += int(j)
    day_num.append(kazu)

count_num = 0
for i in range(0,12):
    count_num += day_num[:day_year[i]].count(i+1)
print(count_num)