#-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)))
         (index-pairs (loop for i from 0 below N collect (cons (nth i P) (1+ i))))
         (sorted-pairs (stable-sort index-pairs #'< :key #'car))
         (result '()))
    (loop for i from 0 below N
          for (value . index) = (nth i sorted-pairs)
          for left = (if (> i 0) (- value (car (nth (1- i) sorted-pairs))) most-positive-fixnum)
          for right = (if (< i (1- N)) (- (car (nth (1+ i) sorted-pairs)) value) most-positive-fixnum)
          for near = (min left right)
          when (> near S) do (push index result))
    (setf result (sort result #'<))
    (format t "~D~%" (length result))
    (dolist (elem result)
      (format t "~D " elem))
    (terpri)))

(main)