(in-package #:cl-user) ;;------------------------------Preferences------------------------------ (eval-when (:compile-toplevel :load-toplevel :execute) #+swank (declaim (optimize (speed 3) (safety 2))) #-swank (declaim (optimize (speed 3) (safety 0) (debug 0))) #+swank (load "~/ghq/github.com/motoshira/atcoder-submission/ac-tools/act.lisp") #+swank (ql:quickload :prove) #-swank (declaim (sb-ext:muffle-conditions sb-ext:compiler-note)) #-swank (sb-ext:disable-debugger) (pushnew :inline-generic-funcion *features*)) ;;---------------------------------Body--------------------------------- (in-package #:cl-user) (declaim (inline println)) (defun println (obj &optional (stream *standard-output*)) (let ((*read-default-float-format* 'double-float)) (prog1 obj (princ obj stream) (terpri stream)))) (defun read-into (count &optional (result-type 'list) (reader #'read)) (coerce (loop :repeat count :collect (funcall reader)) result-type)) (defconstant +inf+ #.(ash 1 60)) (defun main () (let* ((n (read)) (m (read)) (as (read-into n)) (bs (read-into m)) (es nil)) ;; blue -> 0 ;; red -> 1 (dolist (a as) (push (list a 1) es)) (push (list +inf+ 1) es) (push (list -1 1) es) (dolist (b bs) (push (list b 0) es)) (setf es (sort es #'< :key #'first)) (let ((res 0) (cs nil) (a nil)) (flet ((push-blue! (blue) (push blue cs)) (inc-and-flush-blue! (red) (declare (fixnum red)) (when (and a (< red +inf+)) (incf res (- (abs (- red a)) (loop :for (b0 b1) :on (concatenate 'list (list a) (reverse cs) (list red)) :by #'cdr :when b1 :maximize (abs (- b0 b1)))))) (setf a red cs nil))) (loop :for (value type) :in es :do (ecase type (0 (push-blue! value)) (1 (inc-and-flush-blue! value)))) (println res))))) #-swank (main) #+swank (defun run () (let ((*standard-input* (make-string-input-stream (with-output-to-string (*standard-output*) (run-program (merge-pathnames "copy-or-paste" (truename "~/bin/")) '() :output *standard-output*))))) (main)))