{"categories":["topcoder"],"image_url":null,"height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fa-kawashiro.hatenablog.com%2Fentry%2F20110406%2F1302098026\" title=\"SRM457 div1 medium - a_kawashiro\u306e\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","version":"1.0","type":"rich","url":"https://a-kawashiro.hatenablog.com/entry/20110406/1302098026","description":"\uff10\uff1a\u4f55\u7a2e\u985e\u306e\u6570\u5b57\u3092\u4f7f\u3046\u304b\u6c7a\u3081\u308b \uff11\uff1a\u4e8c\u500b\u3064\u304b\u3046\u6570\u5b57\u306e\u4f59\u308a\u3092\u6c7a\u3081\u308b\uff08\u7d44\u307f\u5408\u308f\u305b\u3092\u6c42\u3081\u308b\uff09 \uff12\uff1a\u4e00\u500b\u4f7f\u3046\u6570\u5b57\u306e\u4f59\u308a\u3092\u6c7a\u3081\u308b\uff08\u540c\u4e0a\uff09 \uff13\uff1a\u4e00\u500b\u4f7f\u3046\u65b9\u306f\u5927\u304d\u3044\u65b9\u3092\u4f7f\u3046\u304b\u5c0f\u3055\u3044\u65b9\u3092\u4f7f\u3046\u304b\u304c\u3042\u308b #include <algorithm> #include <cstring> typedef long long LL; using namespace std; class TheHexagonsDivOne { public: int board[7]; LL cache[200][200]; LL C(int n,int r) { if(n<r) return 0; if(cache[n][r]!=-1)\u2026","author_name":"a_kawashiro","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/a_kawashiro/","provider_name":"Hatena Blog","blog_url":"https://a-kawashiro.hatenablog.com/","width":"100%","title":"SRM457 div1 medium","published":"2011-04-06 22:53:46","blog_title":"a_kawashiro\u306e\u30d6\u30ed\u30b0"}