def main():
    days1 = [d for d in range(1, 10)]
    days2 = [d for d in range(10, 32)]
    d = days1

    for i in days2:
        j = sum(list(map(int, str(i))))
        d.append(j)

    HAPPY_DAY = 0
    
    feb_d = d[0:28]
    ajsn_days = d[0:30]
    other_d = d

    feb = [2]
    
    for x in feb:
        for y in feb_d:
            if x == y:
                HAPPY_DAY += 1

    ajsn = [4, 6, 9, 11]
    
    for x in ajsn:
        for y in ajsn_days:
            if x == y:
                HAPPY_DAY += 1
    
    other_m = [1, 3, 5, 7, 8, 10, 12]

    for x in other_m:
        for y in other_d:
            if x == y:
                HAPPY_DAY += 1

        
    print(HAPPY_DAY)


if __name__ == '__main__':
    main()