a = list(map(int, input().split()))
cnt=0
for i in range(len(a)):
    s=""
    if int(a[i])%3==0:
        s+="Fizz"
    if int(a[i])%5==0:
        s+="Buzz"
    if s=="":
        s+=str(a[i])
    cnt+=len(s)
print(cnt)