def month_happyday(month):
    mon = int(month)
    
    day_l = []
    
    for i in range(1, 31):
        day_l.append(i)
    
    cou = 0
        
    for day in day_l:
        day_sum = sum(list(map(int, str(day))))
        if mon == day_sum:
            cou += 1 

    return cou


hd_list = []    
for i in range(1, 13):
    hd_list.append(month_happyday(i))

print(sum(hd_list))