{"height":"190","published":"2017-05-03 13:16:24","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.hamayanhamayan.com%2Fentry%2F2017%2F05%2F03%2F131624\" title=\"\u7af6\u6280\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308bLCA\u554f\u984c\u307e\u3068\u3081 [auxiliary tree] - \u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["\u7af6\u6280\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0"],"provider_name":"Hatena Blog","width":"100%","author_name":"hamayanhamayan","provider_url":"https://hatena.blog","blog_title":"\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093","author_url":"https://blog.hatena.ne.jp/hamayanhamayan/","url":"https://blog.hamayanhamayan.com/entry/2017/05/03/131624","description":"LCA Lowest Common Ancestor \u6839\u4ed8\u304d\u6728\u306e\u3042\u308b2\u9802\u70b9u,v\u306e\u5171\u901a\u7956\u5148\u3067\u6700\u3082\u6839\u304b\u3089\u9060\u3044\u9802\u70b9\u3092\u9ad8\u901f\u306b\u898b\u3064\u3051\u308b\u3053\u3068 yukicoder\u4e0a\u3067\u306eanta\u3055\u3093\u306e\u89e3\u8aac \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u3044\u304f\u3064\u304b\u3042\u308b\u300c\u30c0\u30d6\u30ea\u30f3\u30b0\u300d\u300cHL\u5206\u89e3\u300d\u300cRMQ\u4f7f\u7528\u300dRMQ\u304c\u6700\u901f\u3063\u307d\u3044\u3051\u3069\u3001\u4f53\u611fHL\u5206\u89e3\u306e\u65b9\u304c\u65e9\u3044\u3088\u3046\u306a\u2026 LCA\uff0b\u6839\u304b\u3089\u3042\u308b\u9802\u70b9\u3078\u306e\u60c5\u5831(\u6df1\u3055\u3068\u304b\u30b3\u30b9\u30c8\u548c\u3068\u304b)\u3092\u4f7f\u3046\u89e3\u6cd5\u304c\u591a\u3044 \u4f8b) \u9802\u70b9a\u304b\u3089\u9802\u70b9b\u3078\u306e\u8ddd\u96e2\u306fdist(\u6839,a) + dist(\u6839,b) - 2*dist(\u6839,lca(a,b))\u3068\u306a\u308b LCA\u306f\u5358\u4f53\u3067\u306f\u4f59\u308a\u4f7f\u308f\u308c\u306a\u3044\u306e\u3067\u3001\u3053\u308c\u3060\u3051\u77e5\u3063\u3066\u3066\u3082\u3057\u3087\u3046\u304c\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u304c\u3001\u7121\u3044\u3068\u89e3\u3051\u306a\u3044\u554f\u984c\u306f\u3042\u308b \u2026","image_url":null,"type":"rich","title":"\u7af6\u6280\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3051\u308bLCA\u554f\u984c\u307e\u3068\u3081 [auxiliary tree]","blog_url":"https://blog.hamayanhamayan.com/"}