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  <author_name>a_kawashiro</author_name>
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  <blog_title>a_kawashiroのブログ</blog_title>
  <blog_url>https://a-kawashiro.hatenablog.com/</blog_url>
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    <anon>topcoder</anon>
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  <description>swapは一番最初にすれば全部試してしまえば良いというのに気づけば一発 一回の操作ごとに前1つか、後ろ１か、前後ろ1つずつ考えなくても良くなる #include &lt;cstring&gt; #include &lt;string&gt; using namespace std; class PalindromeFactory { public: string source[50][50]; int cache[50][50][50][50]; int rec(int s1,int s2,int f,int e) { int &amp;r=cache[s1][s2][f][e]; string s=source[s1][s…</description>
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  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2011-03-13 14:51:25</published>
  <title>SRM439 div2 hard</title>
  <type>rich</type>
  <url>https://a-kawashiro.hatenablog.com/entry/20110313/1299995485</url>
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