{"blog_url":"https://inamori.hateblo.jp/","version":"1.0","url":"https://inamori.hateblo.jp/entry/20091124/p1","categories":["\u6570\u5b66"],"provider_url":"https://hatena.blog","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20091124%2Fp1\" title=\"Project Euler 265\uff084\uff09 - 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>","provider_name":"Hatena Blog","height":"190","author_name":"inamori","author_url":"https://blog.hatena.ne.jp/inamori/","type":"rich","width":"100%","title":"Project Euler 265\uff084\uff09","blog_title":"inamori\u2019s diary","description":"\u6628\u65e5\u306e\u591c\u3001\u7720\u308c\u306a\u3044\u306e\u3067\u8003\u3048\u3066\u3044\u305f\u3089\u3001\uff082\uff09\u306e\u65b9\u6cd5\u306f\u4e00\u822c\u7684\u3067\u3042\u308b\u3053\u3068\u306b\u6c17\u304c\u3064\u3044\u305f\u3002 N=6\u3067\u8003\u3048\u3066\u3001\u5358\u72ec\u306e0\u306f\u3001 101xxx\u3067\u3001x\u306f\u4efb\u610f\u3060\u304b\u3089\u30010\u306f8\u3064\u4ee5\u4e0a\u3042\u308b\u3053\u3068\u306b\u306a\u308b\u3002\u540c\u69d8\u306b\u300100\u306f4\u3064\u4ee5\u4e0a\u306a\u3069\u3068\u306a\u308b\u3002 N \u00d7 1 + (N - 2) \u00d7 1 + (N - 3) \u00d7 2 + ... + 1 \u00d7 2N-3 = 2N-1 \u3068\u306a\u308a\u30010\u306f\u305d\u308c\u3067\u5c3d\u304d\u3066\u3044\u308b\u3053\u3068\u306b\u306a\u308b\u3002 \u305f\u3060\u3001\u3053\u306e\u8003\u3048\u65b9\u3067N=6\u306e\u5834\u5408\u3092\u3057\u3089\u307f\u3064\u3076\u3057\u306b\u8003\u3048\u308b\u3068\u3001\u6697\u7b97\u3067\u6982\u7b97\u3057\u305f\u3089\u30015e13\u901a\u308a\u304f\u3089\u3044\u8abf\u3079\u306a\u3051\u308c\u3070\u306a\u3089\u305a\u3001\u8a71\u306b\u306a\u3089\u306a\u3044\u3002 \u307e\u305f\u3001\u984c\u610f\u3092\u6e80\u305f\u3059\u6570\u306f\u3044\u304f\u3064\u3042\u308b\u304b\u3092\u898b\u3066\u307f\u305f\u3068\u3053\u308d\u3001 3 2 4 24 5 211 N=6\u306a\u3089\u6050\u3089\u304f\u300122\u2026","published":"2009-11-24 00:00:00"}