S = list(map(int, input().split()))

for i in range(len(S)):
    FizzBuzz = (S[i] % 3 == 0) and (S[i] % 5 == 0)
    Fizz = (S[i] % 3 == 0) and (S[i] % 5 != 0)
    Buzz = (S[i] % 3 != 0) and (S[i] % 5 == 0)

    if Fizz:
        S[i] = "Fizz"
    elif FizzBuzz:
        S[i] = "FizzBuss"
    elif Buzz:
        S[i] = "Buzz"

print(len("".join(list(map(str, S)))))