{"title":"Ruby\u3067\u6700\u77ed\u30eb\u30fc\u30c8\u6570\u3092\u63a2\u3059 \u301cRuby\u3067\u30aa\u30a4\u30e9\u30fc\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u89e3\u3053\u3046\uff01Problem15","categories":[],"image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/k/keyesberry/20090121/20090121100543.gif","url":"https://keyesberry.hatenadiary.org/entry/20090122/p1","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkeyesberry.hatenadiary.org%2Fentry%2F20090122%2Fp1\" title=\"Ruby\u3067\u6700\u77ed\u30eb\u30fc\u30c8\u6570\u3092\u63a2\u3059 \u301cRuby\u3067\u30aa\u30a4\u30e9\u30fc\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u89e3\u3053\u3046\uff01Problem15 - hp12c\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","width":"100%","author_url":"https://blog.hatena.ne.jp/keyesberry/","description":"Problem 15 - Project Euler\u3088\u308a Starting in the top left corner of a 2\u00d72 grid, there are 6 routes (without backtracking) to the bottom right corner. How many routes are there through a 20\u00d720 grid? 2\u00d72\u30b0\u30ea\u30c3\u30c9\u306e\u5de6\u4e0a\u306e\u89d2\u304b\u3089\u30b9\u30bf\u30fc\u30c8\u3057\u305f\u5834\u5408\u3001\u53f3\u4e0b\u306e\u89d2\u306b\u81f3\u308b\u306b\u306f6\u3064\u306e\u30eb\u30fc\u30c8\u304c\u3042\u308b(\u5f15\u304d\u8fd4\u3057\u306f\u306a\u3057)\u3002 \u3067\u306f20\u00d720\u306e\u30b0\u30ea\u30c3\u30c9\u3067\u306f\u3044\u304f\u3064\u306e\u30eb\u30fc\u30c8\u304c\u3042\u308b\u304b\u3002 \u4efb\u610f\u306e\u4ea4\u70b9\u306b\u81f3\u308b\u30eb\u30fc\u30c8\u306f \u305d\u306e\u771f\u4e0a\u3068\u5de6\u96a3\u306e\u4ea4\u70b9\u304b\u3089\u3060\u3051\u2026","provider_name":"Hatena Blog","blog_url":"https://keyesberry.hatenadiary.org/","author_name":"keyesberry","version":"1.0","blog_title":"hp12c","provider_url":"https://hatena.blog","published":"2009-01-22 00:00:01"}