(defun main (&rest argv)
  (declare (ignorable argv))
  (let* ((n (read))
         (a (make-array n))
         (res 0))
    (dotimes (i n) (setf (aref a i) (read)))
    (sort a #'<)
    (let* ((b (aref a (1- n)))
           (dp (make-array (1+ b) :initial-element 0)))
      (dotimes (i n)
        (let ((c (aref a i)))
          (setf (aref dp c) (max 1 (aref dp c)))
          (loop for j from (* 2 c) to b by c do
                (setf (aref dp j) (max (aref dp j) (1+ (aref dp c)))))))
      (dotimes (i n)
        (setq res (max res (aref dp (aref a i))))))
    (format t "~d~%" res)))

(main)