N = input()

L3 = [0]*len(N)
L5 = [0]*len(N)
L3[0] = 1
L5[0] = 1
for i in range(len(N)-1):
    L3[i+1] = (L3[i]*4)%3
    L5[i+1] = (L5[i]*4)%5

n3 = 0
n5 = 0
for i in range(len(N)):
    n3 += L3[i]*int(N[-i-1])
    n5 += L5[i]*int(N[-i-1])
    n3 %= 3
    n5 %= 5

if n3 == 0 and n5 == 0:
    print("FizzBuzz")
elif n3 == 0:
    print("Fizz")
elif n5 == 0:
    print("Buzz")
else:
    print(N)