結果
| 問題 |
No.1285 ゴミ捨て
|
| コンテスト | |
| ユーザー |
 sansaqua
|
| 提出日時 | 2020-11-23 11:54:17 |
| 言語 | Common Lisp (sbcl 2.5.0) |
| 結果 |
AC
|
| 実行時間 | 109 ms / 2,000 ms |
| コード長 | 8,010 bytes |
| コンパイル時間 | 191 ms |
| コンパイル使用メモリ | 41,600 KB |
| 実行使用メモリ | 24,192 KB |
| 最終ジャッジ日時 | 2024-11-28 21:57:16 |
| 合計ジャッジ時間 | 2,275 ms |
|
ジャッジサーバーID （参考情報） |
judge1 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 22 |
コンパイルメッセージ
; compiling file "/home/judge/data/code/Main.lisp" (written 28 NOV 2024 09:57:12 PM): ; wrote /home/judge/data/code/Main.fasl ; compilation finished in 0:00:00.070
ソースコード
(in-package :cl-user)
(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 :cp/util) :silent t)
#+swank (use-package :cp/util :cl-user)
#-swank (set-dispatch-macro-character
#\# #\> (lambda (s c p) (declare (ignore c p)) `(values ,(read s nil nil t))))
#+sbcl (setq *random-state* (seed-random-state (nth-value 1 (get-time-of-day)))))
#+swank (set-dispatch-macro-character #\# #\> #'cl-debug-print:debug-print-reader)
(macrolet ((def (b)
`(progn (deftype ,(intern (format nil "UINT~A" b)) () '(unsigned-byte ,b))
(deftype ,(intern (format nil "INT~A" b)) () '(signed-byte ,b))))
(define-int-types (&rest bits) `(progn ,@(mapcar (lambda (b) `(def ,b)) bits))))
(define-int-types 2 4 7 8 15 16 31 32 62 63 64))
(defconstant +mod+ 1000000007)
(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)))
(declaim (inline println))
(defun println (obj &optional (stream *standard-output*))
(let ((*read-default-float-format*
(if (typep obj 'double-float) 'double-float *read-default-float-format*)))
(prog1 (princ obj stream) (terpri stream))))
;; BEGIN_INSERTED_CONTENTS
(defpackage :cp/read-fixnum
(:use :cl)
(:export #:read-fixnum))
(in-package :cp/read-fixnum)
(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))))))))
(defpackage :cp/bisect
(:use :cl)
(:export #:bisect-left #:bisect-right))
(in-package :cp/bisect)
(declaim (inline bisect-left))
(defun bisect-left (target value &key (start 0) end (order #'<) (key #'identity))
"TARGET := vector | function (taking an integer argument)
ORDER := strict order
Analogue of lower_bound() of C++ or bisect_left() of Python: Returns the
smallest index (or input) i that fulfills TARGET[i] >= VALUE, where '>=' is the
complement of ORDER. In other words, this function returns the leftmost index at
which VALUE can be inserted with keeping the order. Therefore, TARGET must be
monotonically non-decreasing with respect to ORDER.
- This function returns END if VALUE exceeds TARGET[END-1].
- 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 (integer start)
((or null integer) end))
(macrolet
((frob (accessor &optional declaration)
`(labels
((%bisect-left (ng ok)
;; TARGET[OK] >= VALUE always holds (assuming
;; TARGET[END] = +infinity)
,@(when declaration (list declaration))
(if (<= (- ok ng) 1)
ok
(let ((mid (ash (+ ng ok) -1)))
(if (funcall order (funcall key (,accessor target mid)) value)
(%bisect-left mid ok)
(%bisect-left ng mid))))))
(assert (<= start end))
(%bisect-left (- start 1) end))))
(etypecase target
(vector
(let ((end (or end (length target))))
(frob aref (declare ((integer -1 (#.most-positive-fixnum)) ng ok)))))
(function
(assert end () "Requires END argument if TARGET is a function.")
(frob funcall)))))
(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. Therefore, TARGET must be monotonically non-decreasing with
respect to ORDER.
- This function returns END if VALUE >= TARGET[END-1].
- 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 (integer start)
((or null integer) end))
(macrolet
((frob (accessor &optional declaration)
`(labels
((%bisect-right (ng ok)
;; TARGET[OK] > VALUE always holds (assuming
;; TARGET[END] = +infinity)
,@(when declaration (list declaration))
(if (<= (- ok ng) 1)
ok
(let ((mid (ash (+ ng ok) -1)))
(if (funcall order value (funcall key (,accessor target mid)))
(%bisect-right ng mid)
(%bisect-right mid ok))))))
(assert (<= start end))
(%bisect-right (- start 1) end))))
(etypecase target
(vector
(let ((end (or end (length target))))
(frob aref (declare ((integer -1 (#.array-total-size-limit)) ng ok)))))
(function
(assert end () "Requires END argument if TARGET is a function.")
(frob funcall)))))
;; BEGIN_USE_PACKAGE
(eval-when (:compile-toplevel :load-toplevel :execute)
(use-package :cp/bisect :cl-user))
(eval-when (:compile-toplevel :load-toplevel :execute)
(use-package :cp/read-fixnum :cl-user))
(in-package :cl-user)
;;;
;;; Body
;;;
(defun main ()
(let* ((n (read))
(as (make-array n :element-type 'uint31 :initial-element 0))
(dp (make-array n :element-type 'int32 :initial-element -1)))
(dotimes (i n)
(setf (aref as i) (read-fixnum)))
(setq as (sort as #'<))
(sb-int:dovector (a as)
(let ((pos (bisect-left dp (- a 2) :order #'>)))
(setf (aref dp pos) a)))
(println (count -1 dp :test-not #'=))))
#-swank (main)
;;;
;;; Test and benchmark
;;;
#+swank
(progn
(defparameter *lisp-file-pathname* (uiop:current-lisp-file-pathname))
(setq *default-pathname-defaults* (uiop:pathname-directory-pathname *lisp-file-pathname*))
(uiop:chdir *default-pathname-defaults*)
(defparameter *dat-pathname* (uiop:merge-pathnames* "test.dat" *lisp-file-pathname*))
(defparameter *problem-url* "PROBLEM_URL_TO_BE_REPLACED"))
#+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)))
#+(and sbcl (not swank))
(eval-when (:compile-toplevel)
(when (or (> sb-c::*compiler-warning-count* 0)
sb-c::*undefined-warnings*)
(error "count: ~D, undefined warnings: ~A"
sb-c::*compiler-warning-count*
sb-c::*undefined-warnings*)))