n=input()
list15=[]
list5=[]
list3=[]
for i in range(len(n)):
    a=int(int(n[i])*4**(len(n)-1-i)%15)
    b=int(int(n[i])*4**(len(n)-1-i)%5)
    c=int(int(n[i])*4**(len(n)-1-i)%3)
    list15.append(a)
    list5.append(b)
    list3.append(c)
#print(list15)
#print(list5)
#print(list3)

if sum(list15)%15==0:
    print("FizzBuzz")
elif sum(list5)%5==0:
    print("Buzz")
elif sum(list3)%3==0:
    print("Fizz")
else:
    print(n)