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  <author_name>Pocket7878_dev</author_name>
  <author_url>https://blog.hatena.ne.jp/Pocket7878_dev/</author_url>
  <blog_title>Let's write β</blog_title>
  <blog_url>https://tech-blog.pocket7878.com/</blog_url>
  <categories>
    <anon>ICPC</anon>
    <anon>Lisp</anon>
  </categories>
  <description>ICPC2012の問題が公開になりました。 http://www.psg.cs.titech.ac.jp/icpc/icpc2012/contest/all_ja.html というわけでLispで解いてみましょう。 さて、ProblemAですが、こんな感じですかね。 (defun calc-year-day (year) (if (zerop (mod year 3)) (* 20 10) (+ (* 20 5) (* 19 5)))) (defun convert-to-day (year month day) (let ((res 0)) ;;Year (loop for y from 1…</description>
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  <image_url></image_url>
  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2012-07-06 21:32:13</published>
  <title>ICPC2012 Problem A</title>
  <type>rich</type>
  <url>https://tech-blog.pocket7878.com/entry/20120706/1341577933</url>
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