(define (classify ls)
  (let loop ([a 0]
             [b 0]
             [ls ls])
    (cond [(null? ls) (values a b)]
          [(null? (cdr ls)) (values b (+ a (car ls)))]
          [else (loop (+ a (car ls)) (+ b (cadr ls)) (cddr ls))])))

(define (main args)
  (let* ([s (read-line)]
         [ls (map digit->integer (string->list s))])
    (receive (o e) (classify ls)
             (print
              (cond [(and (zero? (modulo (+ o e) 3)) (zero? (modulo (- e o) 5))) "FizzBuzz"]
                    [(zero? (modulo (+ o e) 3)) "Fizz"]
                    [(zero? (modulo (- e o) 5)) "Buzz"]
                    [else s]))))
  0)