(defun main (&rest argv)
  (declare (ignorable argv))
  (let* ((n (read))
         (m (read))
         (c (read-char)))
    (format t "~a~%" (ecase c
                       (#\= (if (= n m) "YES" "NO"))
                       (#\< (if (< n m) "YES" "NO"))
                       (#\> (if (> n m) "YES" "NO"))))))

(main)