Pocket7878_dev https://blog.hatena.ne.jp/Pocket7878_dev/ Let's write β https://tech-blog.pocket7878.com/ ICPC Lisp Numerial Systemです。 (defun num-char-p (char) (when (typep char 'character) (<= (char-code #\0) (char-code char) (char-code #\9)))) (defun num-char-to-num (num-char) (- (char-code num-char) (char-code #\0))) (defun num-to-num-char (num) (code-char (+ num (char-code #\0)))) (defun mcxi-to-num (mcxi) (l… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftech-blog.pocket7878.com%2Fentry%2F20120707%2F1341630515" title="ICPC2005 ProblemC - Let&#39;s write β" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2012-07-07 12:08:35 rich https://tech-blog.pocket7878.com/entry/20120707/1341630515 1.0 100%