N = input()
mod3 = 0
mod5 = 0
for i in range(len(N)):
    mod3 = (mod3*4 + int(N[i]))%3
    mod5 = (mod5*4 + int(N[i]))%5
isFizz = mod3==0
isBuzz = mod5==0
if isFizz and isBuzz:
    print('FizzBuzz')
elif isFizz:
    print('Fizz')
elif isBuzz:
    print('Buzz')
else:
    print(N)