import sys

def main():
    innum = input()
    inlen= len(innum)
    outsum = 0
    for k,i in enumerate(innum):
        outsum += int(i) * 4 ** (inlen-1-k)
    # print(outlist)

    outstr = ""
    if outsum%3==0:
        outstr += "Fizz"
    if outsum%5==0:
        outstr += "Bizz"
    if outstr=="":
        outstr = outsum
    print(outstr)

    return outstr


if __name__ == '__main__':
    main()