import sequtils,strutils
var
    S = stdin.readline
    ans : string = ""
    cnt : int
    
for c in S:
    cnt += c.ord - '0'.ord
    while cnt >= 3:
        cnt -= 3
if cnt == 0:
    ans &= "Fizz"

cnt = 0
for i,c in S:
    if i mod 2 == 0:
        cnt += c.ord - '0'.ord
    else:
        cnt -= c.ord - '0'.ord
if cnt == 0:
    ans &= "Buzz"

if ans == "":
    echo S
else:
    echo ans