def fz(n):
    if n % 15 == 0:
        return "FizzBuzz"
    elif n % 3==0:
        return "Fizz"
    elif n % 5==0:
        return "Buzz"
    else:
        return str(n)

a = list(map(int,input().split()))
sum =""
for n in a:
    sum += fz(n)
print(len(sum))