{"type":"rich","blog_title":"inamori\u2019s diary","categories":["PE","\u6570\u5b66","\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"provider_url":"https://hatena.blog","blog_url":"https://inamori.hateblo.jp/","published":"2010-02-12 00:00:00","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20100212%2Fp1\" title=\"Project Euler 75 - inamori\u2019s diary\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"inamori","width":"100%","version":"1.0","url":"https://inamori.hateblo.jp/entry/20100212/p1","image_url":null,"description":"Problem 75 \uff08\u524d\u7565\uff09L\u3092\u30ef\u30a4\u30e4\u30fc\u306e\u9577\u3055\u3068\u3057\u3066\u3001L \u2264 1,500,000\u304c\u552f\u4e00\u3064\u306e\u8fba\u306e\u9577\u3055\u304c\u6574\u6570\u306e\u76f4\u89d2\u4e09\u89d2\u5f62\u3092\u6210\u3059L\u306e\u500b\u6570\u3092\u6c42\u3081\u3088\u3002 http://projecteuler.net/index.php?section=problems&id=75 \u30d4\u30bf\u30b4\u30e9\u30b9\u6570\u306e\u751f\u6210\u5f0f\u3092\u4f7f\u3046\u3068\u5468\u306e\u9577\u3055\u306f a + b + c = 2lm(m+n) \u3068\u306a\u308a\u3001m + n -> n\u3068\u7f6e\u304d\u63db\u3048\u3066\u3001 L = 2lmn m \u2264 n \u2264 2m m, n\u306f\u4e92\u3044\u306b\u7d20 n\u306f\u5947\u6570 \u3068\u306a\u308a\u307e\u3059\u3002\u3060\u304b\u3089\u3001L\u3092\u7d20\u56e0\u6570\u5206\u89e3\u3057\u3066\u7d04\u6570\u3092\u51fa\u3057\u3066\u6761\u4ef6\u306b\u5408\u3046\u3082\u306e\u3092\u9078\u3079\u3070\u3001L\u306b\u306a\u308b\u76f4\u89d2\u4e09\u89d2\u5f62\u3092\u6570\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff08Code1\uff09\u3002\u305f\u3060\u3057\u3001\u975e\u5e38\u306b\u9045\u2026","author_url":"https://blog.hatena.ne.jp/inamori/","height":"190","title":"Project Euler 75","provider_name":"Hatena Blog"}