(defun vector-append (vec1 vec2)
  (let ((len1 (length vec1))
        (len2 (length vec2)))
    (let ((result (make-array (+ len1 len2) :element-type (array-element-type vec1))))
      (dotimes (i len1)
        (setf (aref result i) (aref vec1 i)))
      (dotimes (i len2)
        (setf (aref result (+ i len1)) (aref vec2 i)))
      result)))

(defun combinations (vec k)
  (if (= k 0)
      (vector)
      (when (not (zerop (length vec)))
        (let ((first (aref vec 0))
              (rest (subseq vec 1)))
          (let ((with-first (mapcar (lambda (x) (vector first x))
                                     (combinations rest (1- k)))))
            (vector-append with-first (combinations rest k)))))))

(defun main (&rest argv)
  (declare (ignorable argv))
  (let* ((n (read))
         (k (read))
         (a (make-array n))
         (res 0)
         (m1 998)
         (m2 998244353))
    (dotimes (i n) (setf (aref a i) (read)))
    (loop for i across (combinations a k)
          with s = (reduce #'+ i)
          when (>= (mod s m1) (mod s m2))
            do (incf res))
    (format t "~d~%" (mod res m1))))
(main)