(defun main (&rest argv)
  (declare (ignorable argv))
  (let* ((n (read))
         (k (read))
         (a (make-array n))
         (m1 998244353)
         (m2 998)
         (res 0))
    (dotimes (i n) (setf (aref a i) (read)))
    (labels ((f (p q r)
                (when (= (length p) k)
                      (when (<= (mod r m1) (mod r m2))
                            (incf res)))
                (loop for i from q below n do
                      (push (aref a i) p)
                      (f p (1+ i) (+ r (aref a i)))
                      (pop p))))
      (f nil 0 0))
    (format t "~d~%" (mod res m2))))

(main)