結果

問題 No.2803 Bocching Star
ユーザー Lisp_Coder
提出日時 2024-07-21 01:12:28
言語 Common Lisp
(sbcl 2.5.0)
結果
RE  
実行時間 -
コード長 2,891 bytes
コンパイル時間 258 ms
コンパイル使用メモリ 37,808 KB
実行使用メモリ 38,548 KB
最終ジャッジ日時 2024-07-21 01:12:32
合計ジャッジ時間 2,167 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge3
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ファイルパターン 結果
sample RE * 3
other RE * 35
権限があれば一括ダウンロードができます
コンパイルメッセージ
; compiling file "/home/judge/data/code/Main.lisp" (written 21 JUL 2024 01:12:28 AM):

; file: /home/judge/data/code/Main.lisp
; in: DEFUN MAIN
;     (SORT INDEXED-P #'< :KEY #'CAR)
; 
; caught STYLE-WARNING:
;   The return value of STABLE-SORT-LIST should not be discarded.

;     (LET* ((DATA (READ-INTEGERS))
;            (N (FIRST DATA))
;            (S (SECOND DATA))
;            (P (SUBSEQ DATA 2 (+ 2 N)))
;            (INDEXED-P
;             (LOOP FOR I FROM 0 BELOW N
;                   COLLECT (CONS # I)))
;            (SORTED-P (SORT INDEXED-P #'< :KEY #'CAR))
;            (PARENT (CAR (UNION-FIND-MAKE N)))
;            (RANK (CADR (UNION-FIND-MAKE N)))
;            (RESULT 'NIL))
;       (LOOP FOR I FROM 0 BELOW (1- N)
;             FOR (VAL1 . IDX1) = (NTH I SORTED-P)
;             FOR ...)
;       (LOOP FOR I FROM 0 BELOW N
;             FOR ROOT = (UNION-FIND-FIND PARENT I)
;             IF ...)
;       (SETF RESULT (SORT RESULT #'<))
;       (WITH-OPEN-FILE
;           (STREAM *STANDARD-OUTPUT* :DIRECTION :OUTPUT :EXTERNAL-FORMAT :UTF-8)
;         (FORMAT STREAM "~d~%" (LENGTH RESULT))
;         (DOLIST (ELEM RESULT) (FORMAT STREAM "~d " ELEM))
;         (TERPRI STREAM)))
; 
; note: deleting unreachable code

;     (CAR (UNION-FIND-MAKE N))
; 
; caught WARNING:
;   Derived type of (COMMON-LISP-USER::UNION-FIND-MAKE COMMON-LISP-USER::N) is
;     (VALUES (SIMPLE-ARRAY T) SIMPLE-VECTOR &OPTIONAL),
;   conflicting with its asserted type
;     LIST.
;   See also:
;     The SBCL Manual, Node "Handling of Types"
; 
; compilation unit finished
;   caught 1 WARNING condition
;   caught 1 STYLE-WARNING condition
;   printed 1 note


; wrote /home/judge/data/code/Main.fasl
; compilation finished in 0:00:00.110

ソースコード

diff # 

#-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 read-integers ()
  (with-open-file (stream *standard-input* :direction :input :external-format :utf-8)
    (loop for line = (read-line stream nil)
          while line
          append (mapcar #'parse-integer (split-sequence-from-string line)))))

(defun split-sequence-from-string (str)
  (let ((start 0)
        (len (length str))
        (result '()))
    (loop for i from 0 to len
          when (or (eql i len) (char= (char str i) #\Space))
          do (when (> i start)
               (push (subseq str start i) result))
             (setf start (1+ i)))
    (nreverse result)))

(defun union-find-make (n)
  (let ((parent (make-array n :initial-contents (loop for i from 0 below n collect i)))
        (rank (make-array n :initial-element 0)))
    (values parent rank)))

(defun union-find-find (parent x)
  (if (/= (aref parent x) x)
      (setf (aref parent x) (union-find-find parent (aref parent x))))
  (aref parent x))

(defun union-find-union (parent rank x y)
  (let ((root-x (union-find-find parent x))
        (root-y (union-find-find parent y)))
    (unless (= root-x root-y)
      (cond ((> (aref rank root-x) (aref rank root-y))
             (setf (aref parent root-y) root-x))
            ((< (aref rank root-x) (aref rank root-y))
             (setf (aref parent root-x) root-y))
            (t
             (setf (aref parent root-y) root-x)
             (incf (aref rank root-x)))))))

(defun main ()
  (let* ((data (read-integers))
         (N (first data))
         (S (second data))
         (P (subseq data 2 (+ 2 N)))
         (indexed-P (loop for i from 0 below N collect (cons (nth i P) i)))
         (sorted-P (sort indexed-P #'< :key #'car))
         (parent (car (union-find-make N)))
         (rank (cadr (union-find-make N)))
         (result '()))
    (loop for i from 0 below (1- N)
          for (val1 . idx1) = (nth i sorted-P)
          for (val2 . idx2) = (nth (1+ i) sorted-P)
          when (<= (- val2 val1) S)
          do (union-find-union parent rank idx1 idx2))
    (loop for i from 0 below N
          for root = (union-find-find parent i)
          if (= root i)
          do (push (1+ i) result))
    (setf result (sort result #'<))
    (with-open-file (stream *standard-output* :direction :output :external-format :utf-8)
      (format stream "~d~%" (length result))
      (dolist (elem result)
        (format stream "~d " elem))
      (terpri stream))))

(main)
0