months = [month for month in range(1,13)]
days_tens = [day_tens for day_tens in range(0,4)]
days_ones = [day_ones for day_ones in range(0,10)]

count = 0
for month in months:
    for day_tens in days_tens:
        for day_ones in days_ones:
            if day_tens == 3:
                if day_ones >= 2:
                    pass
            elif month == 4:
                if day_tens == 3 and day_ones == 1:
                    pass
            elif month == day_tens + day_ones:
                count += 1
print(count)