;; -*- coding: utf-8 -*-
(eval-when (:compile-toplevel :load-toplevel :execute)
  (defparameter OPT
    #+swank '(optimize (speed 3) (safety 2))
    #-swank '(optimize (speed 3) (safety 0) (debug 0)))
  #+swank (ql:quickload '(:cl-debug-print :fiveam))
  #-swank (set-dispatch-macro-character #\# #\> (lambda (s c p) (declare (ignore c p)) (read s nil (values) t))))
#+swank (cl-syntax:use-syntax cl-debug-print:debug-print-syntax)
#-swank (disable-debugger) ; for CS Academy

;; BEGIN_INSERTED_CONTENTS
(declaim (inline bisect-right))
(defun bisect-right (target value &key (start 0) end (order #'<) (key #'identity))
  "TARGET := vector | function (taking an integer argument)
ORDER := strict order

Analogue of upper_bound of C++ or bisect_right of Python: Returns the smallest
index (or input) i that fulfills TARGET[i] > VALUE. In other words, this
function returns the rightmost index at which VALUE can be inserted with keeping
the order. TARGET must be monotonically non-decreasing with respect to ORDER.

This function returns END if VALUE >= TARGET[END-1]. Note that the range [START,
END) is half-open. END must be explicitly specified if TARGET is function. KEY
is applied to each element of TARGET before comparison."
  (declare (function key order)
           (integer start)
           ((or null integer) end))
  (macrolet
      ((body (accessor &optional declaration)
         `(progn
            (assert (<= start end))
            (if (= start end)
                end
                (labels
                    ((%bisect-right (left ok)
                       ;; TARGET[OK] > VALUE always holds (assuming
                       ;; TARGET[END] = +infinity)
                       ,@(list declaration)
                       (let ((mid (ash (+ left ok) -1)))
                         (if (= mid left)
                             (if (funcall order value (funcall key (,accessor target left)))
                                 left
                                 ok)
                             (if (funcall order value (funcall key (,accessor target mid)))
                                 (%bisect-right left mid)
                                 (%bisect-right mid ok))))))
                  
                  (%bisect-right start end))))))
    (etypecase target
      (vector
       (when (null end)
         (setf end (length target)))
       (body aref (declare ((integer 0 #.most-positive-fixnum) left ok))))
      (function
       (assert end () "Requires END argument if TARGET is a function.")
       (body funcall)))))

;; Should we do this with UNWIND-PROTECT?
(defmacro with-buffered-stdout (&body body)
  "Buffers all outputs to *STANDARD-OUTPUT* in BODY and flushes them to
*STANDARD-OUTPUT* after BODY has been done (without error). Note that only
BASE-CHAR is allowed."
  (let ((out (gensym)))
    `(let ((,out (make-string-output-stream :element-type 'base-char)))
       (let ((*standard-output* ,out))
         ,@body)
       (write-string (get-output-stream-string ,out)))))

(declaim (ftype (function * (values fixnum &optional)) read-fixnum))
(defun read-fixnum (&optional (in *standard-input*))
  (declare #.OPT)
  (macrolet ((%read-byte ()
               `(the (unsigned-byte 8)
                     #+swank (char-code (read-char in nil #\Nul))
                     #-swank (sb-impl::ansi-stream-read-byte in nil #.(char-code #\Nul) nil))))
    (let* ((minus nil)
           (result (loop (let ((byte (%read-byte)))
                           (cond ((<= 48 byte 57)
                                  (return (- byte 48)))
                                 ((zerop byte) ; #\Nul
                                  (error "Read EOF or #\Nul."))
                                 ((= byte #.(char-code #\-))
                                  (setf minus t)))))))
      (declare ((integer 0 #.most-positive-fixnum) result))
      (loop
        (let* ((byte (%read-byte)))
          (if (<= 48 byte 57)
              (setq result (+ (- byte 48) (* 10 (the (integer 0 #.(floor most-positive-fixnum 10)) result))))
              (return (if minus (- result) result))))))))

(defmacro dbg (&rest forms)
  #+swank
  (if (= (length forms) 1)
      `(format *error-output* "~A => ~A~%" ',(car forms) ,(car forms))
      `(format *error-output* "~A => ~A~%" ',forms `(,,@forms)))
  #-swank (declare (ignore forms)))

(defmacro define-int-types (&rest bits)
  `(progn
     ,@(mapcar (lambda (b) `(deftype ,(intern (format nil "UINT~A" b)) () '(unsigned-byte ,b))) bits)
     ,@(mapcar (lambda (b) `(deftype ,(intern (format nil "INT~A" b)) () '(signed-byte ,b))) bits)))
(define-int-types 2 4 7 8 15 16 31 32 62 63 64)

(declaim (inline println))
(defun println (obj &optional (stream *standard-output*))
  (let ((*read-default-float-format* 'double-float))
    (prog1 (princ obj stream) (terpri stream))))

(defconstant +mod+ 1000000007)

;; Body

(defconstant +depth-size+ 17)

(defun main ()
  (declare #.OPT)
  (let* ((n (read))
         (xs (make-array n :element-type 'uint32))
         (rtable (make-array `(,+depth-size+ ,n) :element-type 'uint32)))
    (declare (uint32 n))
    (dotimes (i n)
      (setf (aref xs i) (read-fixnum)))
    (let ((l (read))
          (q (read)))
      (declare (uint32 l q))
      (dotimes (i n)
        (let ((rnext (- (bisect-right xs (+ l (aref xs i))) 1)))
          (setf (aref rtable 0 i) rnext)))
      (loop for depth from 1 below +depth-size+
            do (dotimes (i n)
                 (setf (aref rtable depth i)
                       (aref rtable (- depth 1) (aref rtable (- depth 1) i)))))
      (labels ((query (a b)
                 (loop with res of-type uint32 = 0
                       for depth from (- +depth-size+ 1) downto 0
                       do (when (< (aref rtable depth a) b)
                            (incf res (ash 1 depth))
                            (setq a (aref rtable depth a)))
                       finally (return (+ res 1)))))
        (with-buffered-stdout
          (dotimes (_ q)
            (let ((a (- (read-fixnum) 1))
                  (b (- (read-fixnum) 1)))
              (when (> a b)
                (rotatef a b))
              (println (query a b)))))))))

#-swank (main)


Measured memory_bytes: 29792