{"blog_title":"inamori\u2019s diary","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finamori.hateblo.jp%2Fentry%2F20120412%2Fp1\" title=\"Project Euler 129 - 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>","blog_url":"https://inamori.hateblo.jp/","title":"Project Euler 129","image_url":null,"provider_name":"Hatena Blog","height":"190","description":"Problem 129A(n)\u306f\u3001 (10e - 1) / 9 \u2261 0 (mod n) \u3068\u306a\u308b1\u4ee5\u4e0a\u3067\u6700\u5c0f\u306ee\u3067\u3059\u3002 n\u304c2\u307e\u305f\u306f5\u3067\u5272\u308a\u5207\u308c\u308b\u3068\u304d\u3001\u3053\u306e\u5f0f\u3092\u6e80\u305f\u3059e\u306f\u7121\u3044\u306e\u3067\u8003\u616e\u306b\u5165\u308c\u307e\u305b\u3093\u3002 A(n)\u306f\u3001n\u304c3\u3067\u5272\u308a\u5207\u308c\u306a\u3044\u3068\u304d\u3001 10e \u2261 1 (mod n) \u3068\u306a\u308b\u6700\u5c0f\u306ee\u3067\u3059\u30027\u306e\u5270\u4f59\u306a\u3089\u300110\u304b\u308910\u500d\u3057\u3066\u3044\u3063\u3066\u3001 10 \u2192 2 \u2192 6 \u2192 4 \u2192 5 \u2192 1 \u3060\u304b\u3089\u6700\u5c0f\u306ee\u306f6\u300111\u306e\u5270\u4f59\u306a\u3089\u3001 10 \u2192 1 \u3060\u304b\u30892\u3067\u3059\u3002\u3053\u306ee\u3092B(n)\u3068\u66f8\u304f\u3053\u3068\u306b\u3057\u307e\u3057\u3087\u3046\u3002B(7) = 6\u3001B(11) = 2\u3067\u3059\u3002n\u306e\u65e2\u7d04\u5270\u4f59\u985e\u7fa4\u306710\u304c\u539f\u59cb\u6839\u306b\u306a\u3063\u3066\u3044\u308c\u3070B(n) = \u03c6(n)\u3067\u3059\u3002\u65e2\u7d04\u2026","width":"100%","version":"1.0","author_url":"https://blog.hatena.ne.jp/inamori/","published":"2012-04-12 00:00:00","provider_url":"https://hatena.blog","url":"https://inamori.hateblo.jp/entry/20120412/p1","categories":["\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0","Python"],"author_name":"inamori"}