(defun cross-product ()
  (let* ((ax (read))
         (ay (read))
         (az (read))
         (bx (read))
         (by (read))
         (bz (read))
         (cx (- (* ay bz) (* az by)))
         (cy (- (* az bx) (* ax bz)))
         (cz (- (* ax by) (* ay bx))))
    (format t "~d ~d ~d~%" cx cy cz)))

(cross-product)