(declaim (optimize (speed 3) (safety 0) (debug 0)))
(defun main (&rest argv)
  (declare (ignorable argv))
  (let* ((a1 (read))
         (b1 (read))
         (a2 (read))
         (b2 (read))
         (a3 (read))
         (b3 (read)))
    (declare (type (unsigned-byte 32) a1)
             (type (unsigned-byte 32) a2)
             (type (unsigned-byte 32) a3)
             (ignore b1)
             (ignore b2)
             (ignore b3))
    (format t "~a~%" (if (evenp (+ a1 a2 a3)) ":-)" ":-("))))

(main)