N = input()

tmp3 = 0
tmp5 = 0
for i in range(len(N)):
    n = int(N[i])
    tmp3 = (tmp3*4 + n)%3
    tmp5 = (tmp5*4 + n)%5

if tmp3+tmp5==0:
    print("FizzBuzz")
elif tmp3==0:
    print("Fizz")
elif tmp5==0:
    print("Buzz")
else:
    print(N)