#-swank
(unless (member :child-sbcl *features*)
  (quit
   :recklessly-p t
   :unix-status
   (process-exit-code
    (run-program *runtime-pathname*
                 `("--control-stack-size" "1024MB"
                   "--noinform" "--disable-ldb" "--lose-on-corruption" "--end-runtime-options"
                   "--eval" "(push :child-sbcl *features*)"
                   "--script" ,(namestring *load-pathname*))
                 :output t :error t :input t))))

(defun main ()
  (let* ((N (read))
         (S (read))
         (P (loop for i from 0 below N collect (read)))
         (indexed-P (loop for i from 0 below N collect (cons (nth i P) (1+ i))))
         (sorted-P (sort indexed-P #'< :key #'car))
         (result '()))
    (loop for i from 1 below N
          for (val1 . idx1) = (nth (1- i) sorted-P)
          for (val2 . idx2) = (nth i sorted-P)
          when (> (- val2 val1) S) do (push idx2 result))
    (let* ((first (first sorted-P))
           (last (first (last sorted-P))))
      (when (> (- (car first) most-negative-fixnum) S)
        (push (cdr first) result))
      (when (> (- most-positive-fixnum (car last)) S)
        (push (cdr last) result)))
    (setf result (sort result #'<))
    (format t "~D~%" (length result))
    (dolist (elem result)
      (format t "~D " elem))
    (terpri)))

(main)