結果
| 問題 |
No.674 n連勤
|
| コンテスト | |
| ユーザー |
 sansaqua
|
| 提出日時 | 2020-07-02 10:38:26 |
| 言語 | Common Lisp (sbcl 2.5.0) |
| 結果 |
AC
|
| 実行時間 | 72 ms / 2,000 ms |
| コード長 | 14,925 bytes |
| コンパイル時間 | 1,093 ms |
| コンパイル使用メモリ | 58,596 KB |
| 実行使用メモリ | 34,544 KB |
| 最終ジャッジ日時 | 2024-09-14 22:18:30 |
| 合計ジャッジ時間 | 2,625 ms |
|
ジャッジサーバーID （参考情報） |
judge3 / judge5 |
（要ログイン）
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 17 |
コンパイルメッセージ
; compiling file "/home/judge/data/code/Main.lisp" (written 14 SEP 2024 10:18:27 PM): ; file: /home/judge/data/code/Main.lisp ; in: DEFUN %ISET-INSERT ; (- RKEY LKEY) ; ; note: doing signed word to integer coercion (cost 20), for: ; the first result of inline (signed-byte 64) arithmetic ; in: DEFUN MAIN ; (D (READ-FIXNUM)) ; ; caught STYLE-WARNING: ; The variable D is defined but never used. ; ; compilation unit finished ; caught 1 STYLE-WARNING condition ; printed 1 note ; wrote /home/judge/data/code/Main.fasl ; compilation finished in 0:00:00.114
ソースコード
(eval-when (:compile-toplevel :load-toplevel :execute)
(sb-int:defconstant-eqx opt
#+swank '(optimize (speed 3) (safety 2))
#-swank '(optimize (speed 3) (safety 0) (debug 0))
#'equal)
#+swank (ql:quickload '(:cl-debug-print :fiveam) :silent t)
#-swank (set-dispatch-macro-character
#\# #\> (lambda (s c p) (declare (ignore c p)) `(values ,(read s nil nil t)))))
#+swank (cl-syntax:use-syntax cl-debug-print:debug-print-syntax)
#-swank (disable-debugger) ; for CS Academy
;; BEGIN_INSERTED_CONTENTS
;;;
;;; Ordered set of half-open intervals
;;;
(defstruct (interval-set (:constructor %make-interval-set
(lkey rkey value lnode rnode
&aux (priority (random most-positive-fixnum))))
(:conc-name %iset-))
"This structure maintains an ordered set of half-open intervals with a
balanced binary search tree (treap). Every fundamental operation takes expected
O(log(n)) time."
(lkey 0 :type fixnum)
(rkey 0 :type fixnum)
(value 0 :type fixnum)
(priority 0 :type fixnum)
(lnode nil :type (or null interval-set))
(rnode nil :type (or null interval-set)))
(declaim (inline iset-value))
(defun iset-value (iset)
(if iset (%iset-value iset) 0))
(declaim (inline force-up))
(defun force-up (iset)
(when iset
(setf (%iset-value iset)
(max (iset-value (%iset-lnode iset))
(- (%iset-rkey iset) (%iset-lkey iset))
(iset-value (%iset-rnode iset))))))
(declaim (inline iset-map))
(defun iset-map (function iset)
"Applies function to each interval [L, R) in ISET in ascending order."
(labels ((recur (node)
(when node
(recur (%iset-lnode node))
(funcall function (%iset-lkey node) (%iset-rkey node))
(recur (%iset-rnode node)))))
(recur iset)))
(defmethod print-object ((object interval-set) stream)
(print-unreadable-object (object stream :type t)
(let ((init t))
(iset-map (lambda (l r)
(if init
(setq init nil)
(write-char #\ stream))
(format stream "[~A ~A)" l r))
object))))
(declaim (ftype (function * (values (or null interval-set) &optional)) %iset-concat))
(defun %iset-concat (left right)
(declare (optimize (speed 3)))
(cond ((null left) right)
((null right) left)
((> (%iset-priority left) (%iset-priority right))
(setf (%iset-rnode left)
(%iset-concat (%iset-rnode left) right))
(force-up left)
left)
(t
(setf (%iset-lnode right)
(%iset-concat left (%iset-lnode right)))
(force-up right)
right)))
(declaim (ftype (function * (values (or null interval-set)
(or null interval-set)
&optional))
%iset-split))
(defun %iset-split (iset lkey)
(declare (optimize (speed 3))
(fixnum lkey))
(labels ((recur (node)
(cond ((null node) (values nil nil))
((< (%iset-lkey node) lkey)
(multiple-value-bind (lnode rnode)
(recur (%iset-rnode node))
(setf (%iset-rnode node) lnode)
(force-up node)
(values node rnode)))
(t
(multiple-value-bind (lnode rnode)
(recur (%iset-lnode node))
(setf (%iset-lnode node) rnode)
(force-up node)
(values lnode node))))))
(recur iset)))
(declaim (ftype (function * (values (or null interval-set) &optional)) %iset-insert))
(defun %iset-insert (iset lkey rkey)
(declare (optimize (speed 3))
(fixnum lkey rkey))
(let ((new-node (%make-interval-set lkey rkey (- rkey lkey) nil nil)))
(labels ((recur (node)
(cond ((null node) new-node)
((> (%iset-priority new-node) (%iset-priority node))
(setf (values (%iset-lnode new-node) (%iset-rnode new-node))
(%iset-split node (%iset-lkey new-node)))
(force-up new-node)
new-node)
(t
(if (< (%iset-lkey new-node) (%iset-lkey node))
(setf (%iset-lnode node) (recur (%iset-lnode node)))
(setf (%iset-rnode node) (recur (%iset-rnode node))))
(force-up node)
node))))
(recur iset))))
(declaim (ftype (function * (values fixnum &optional)) %iset-leftmost-key))
(defun %iset-leftmost-key (iset)
(declare (optimize (speed 3)))
(if (%iset-lnode iset)
(%iset-leftmost-key (%iset-lnode iset))
(%iset-lkey iset)))
(declaim (ftype (function * (values fixnum &optional)) %iset-rightmost-key))
(defun %iset-rightmost-key (iset)
(declare (optimize (speed 3)))
(if (%iset-rnode iset)
(%iset-rightmost-key (%iset-rnode iset))
(%iset-rkey iset)))
(defun iset-insert (iset lkey rkey)
"Adds an interval [LKEY, RKEY) to ISET."
(declare (optimize (speed 3))
(fixnum lkey rkey))
(assert (<= lkey rkey))
(labels ((lsplit (node)
(cond ((null node) (values nil nil))
((< (%iset-rkey node) lkey)
(multiple-value-bind (lnode rnode)
(lsplit (%iset-rnode node))
(setf (%iset-rnode node) lnode)
(force-up node)
(values node rnode)))
(t
(multiple-value-bind (lnode rnode)
(lsplit (%iset-lnode node))
(setf (%iset-lnode node) rnode)
(force-up node)
(values lnode node)))))
(rsplit (node)
(cond ((null node) (values nil nil))
((< rkey (%iset-lkey node))
(multiple-value-bind (lnode rnode)
(rsplit (%iset-lnode node))
(setf (%iset-lnode node) rnode)
(force-up node)
(values lnode node)))
(t
(multiple-value-bind (lnode rnode)
(rsplit (%iset-rnode node))
(setf (%iset-rnode node) lnode)
(force-up node)
(values node rnode))))))
(if (= lkey rkey)
iset
(multiple-value-bind (left tmp) (lsplit iset)
(multiple-value-bind (mid right) (rsplit tmp)
(let ((base (%iset-concat left right)))
(let ((new-lkey (if mid (min (%iset-leftmost-key mid) lkey) lkey))
(new-rkey (if mid (max (%iset-rightmost-key mid) rkey) rkey)))
(declare (fixnum new-lkey new-rkey))
(%iset-insert base new-lkey new-rkey))))))))
(defmacro iset-push (iset lkey rkey)
"PUSH-style macro for ISET-INSERT."
`(setf ,iset (iset-insert ,iset ,lkey ,rkey)))
(defmacro iset-push-point (iset key)
(let ((tmp (gensym)))
`(let ((,tmp ,key))
(setf ,iset (iset-insert ,iset ,tmp (+ ,tmp 1))))))
(defun iset-delete (iset lkey rkey)
"Removes an interval [LKEY, RKEY) from ISET."
(declare (optimize (speed 3))
(fixnum lkey rkey))
(assert (<= lkey rkey))
(if (= lkey rkey)
iset
(labels ((lsplit (node)
(cond ((null node) (values nil nil))
((< (%iset-rkey node) lkey)
(multiple-value-bind (lnode rnode)
(lsplit (%iset-rnode node))
(setf (%iset-rnode node) lnode)
(force-up node)
(values node rnode)))
(t
(multiple-value-bind (lnode rnode)
(lsplit (%iset-lnode node))
(setf (%iset-lnode node) rnode)
(force-up node)
(values lnode node)))))
(rsplit (node)
(cond ((null node) (values nil nil))
((< rkey (%iset-lkey node))
(multiple-value-bind (lnode rnode)
(rsplit (%iset-lnode node))
(setf (%iset-lnode node) rnode)
(force-up node)
(values lnode node)))
(t
(multiple-value-bind (lnode rnode)
(rsplit (%iset-rnode node))
(setf (%iset-rnode node) lnode)
(force-up node)
(values node rnode))))))
(multiple-value-bind (left tmp) (lsplit iset)
(multiple-value-bind (mid right) (rsplit tmp)
(let ((base (%iset-concat left right))
(new-lkey (if mid (min (%iset-leftmost-key mid) lkey) lkey))
(new-rkey (if mid (max (%iset-rightmost-key mid) rkey) rkey)))
(iset-insert (iset-insert base new-lkey lkey)
rkey new-rkey)))))))
(defmacro iset-pop (iset lkey rkey)
"POP-style macro for ISET-INSERT."
`(setf ,iset (iset-delete ,iset ,lkey ,rkey)))
(defmacro iset-pop-point (iset key)
(let ((tmp (gensym)))
`(let ((,tmp ,key))
(setf ,iset (iset-delete ,iset ,tmp (+ ,tmp 1))))))
(declaim (ftype (function * (values (or null fixnum) (or null fixnum) &optional))
iset-find))
(defun iset-find (iset key)
"Returns the half-open interval that contains KEY if it exists, otherwise
returns (VALUES NIL NIL)."
(declare (optimize (speed 3))
(fixnum key))
(labels ((recur (node)
(cond ((null node) (values nil nil))
((< key (%iset-lkey node))
(recur (%iset-lnode node)))
((< key (%iset-rkey node))
(values (%iset-lkey node) (%iset-rkey node)))
(t (recur (%iset-rnode node))))))
(recur iset)))
(declaim (ftype (function * (values fixnum &optional)) read-fixnum))
(defun read-fixnum (&optional (in *standard-input*))
"NOTE: cannot read -2^62"
(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 #\-))
(setq 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))))))))
(in-package :cl-user)
(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
;;;
(defun main ()
(let* ((d (read-fixnum))
(q (read-fixnum))
iset)
(write-string
(with-output-to-string (*standard-output* nil :element-type 'base-char)
(dotimes (_ q)
(let ((a (- (read-fixnum) 1))
(b (read-fixnum)))
(iset-push iset a b)
(println (iset-value iset))))))))
#-swank (main)
;;;
;;; Test and benchmark
;;;
#+swank
(defun io-equal (in-string out-string &key (function #'main) (test #'equal))
"Passes IN-STRING to *STANDARD-INPUT*, executes FUNCTION, and returns true if
the string output to *STANDARD-OUTPUT* is equal to OUT-STRING."
(labels ((ensure-last-lf (s)
(if (eql (uiop:last-char s) #\Linefeed)
s
(uiop:strcat s uiop:+lf+))))
(funcall test
(ensure-last-lf out-string)
(with-output-to-string (out)
(let ((*standard-output* out))
(with-input-from-string (*standard-input* (ensure-last-lf in-string))
(funcall function)))))))
#+swank
(defun get-clipbrd ()
(with-output-to-string (out)
(run-program "powershell.exe" '("-Command" "Get-Clipboard") :output out :search t)))
#+swank (defparameter *this-pathname* (uiop:current-lisp-file-pathname))
#+swank (defparameter *dat-pathname* (uiop:merge-pathnames* "test.dat" *this-pathname*))
#+swank
(defun run (&optional thing (out *standard-output*))
"THING := null | string | symbol | pathname
null: run #'MAIN using the text on clipboard as input.
string: run #'MAIN using the string as input.
symbol: alias of FIVEAM:RUN!.
pathname: run #'MAIN using the text file as input."
(let ((*standard-output* out))
(etypecase thing
(null
(with-input-from-string (*standard-input* (delete #\Return (get-clipbrd)))
(main)))
(string
(with-input-from-string (*standard-input* (delete #\Return thing))
(main)))
(symbol (5am:run! thing))
(pathname
(with-open-file (*standard-input* thing)
(main))))))
#+swank
(defun gen-dat ()
(uiop:with-output-file (out *dat-pathname* :if-exists :supersede)
(format out "")))
#+swank
(defun bench (&optional (out (make-broadcast-stream)))
(time (run *dat-pathname* out)))
;; To run: (5am:run! :sample)
#+swank
(it.bese.fiveam:test :sample
(it.bese.fiveam:is
(common-lisp-user::io-equal "10 3
0 1
6 8
2 7
"
"2
3
9
"))
(it.bese.fiveam:is
(common-lisp-user::io-equal "10 4
3 7
3 5
1 1
4 9
"
"5
5
5
7
"))
(it.bese.fiveam:is
(common-lisp-user::io-equal "1000000000000000000 2
0 999999999999999999
0 999999999999999999
"
"1000000000000000000
1000000000000000000
")))