{"provider_url":"https://hatena.blog","categories":["\u30b0\u30e9\u30d5\u7406\u8ad6","\u6728","\u30aa\u30a4\u30e9\u30fc\u30c4\u30a2\u30fc","LCA\uff08\u6700\u5c0f\u5171\u901a\u7956\u5148\uff09","\u30b9\u30d1\u30fc\u30b9\u30c6\u30fc\u30d6\u30eb"],"author_url":"https://blog.hatena.ne.jp/atcoder/","provider_name":"Hatena Blog","published":"2026-04-10 14:15:48","width":"100%","blog_url":"https://info.atcoder.jp/","description":"1. \u6982\u8981 \u672c\u8a18\u4e8b\u3067\u306f\uff0c\u30aa\u30a4\u30e9\u30fc\u30c4\u30a2\u30fc\u30c6\u30af\u30cb\u30c3\u30af \u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\uff0e \u30aa\u30a4\u30e9\u30fc\u30c4\u30a2\u30fc\u30c6\u30af\u30cb\u30c3\u30af\u306f \u8ad6\u6587 3 \u306b\u304a\u3044\u3066\u5c0e\u5165\u3055\u308c\u305f\u30c6\u30af\u30cb\u30c3\u30af\u3067\u3059\uff0e\u3053\u308c\u306f\u6728\u306e\u60c5\u5831\u3092\uff0c\u9802\u70b9\u5168\u4f53\u3084\u8fba\u5168\u4f53\u3092\u7279\u5b9a\u306e\u65b9\u6cd5\u3067 $1$ \u5217\u306b\u4e26\u3079\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u8868\u73fe\u3059\u308b\u3082\u306e\u3067\u3059\uff0e\u3053\u306e\u30c6\u30af\u30cb\u30c3\u30af\u306b\u3088\u3063\u3066\u6728\u306b\u5bfe\u3059\u308b\u3055\u307e\u3056\u307e\u306a\u554f\u984c\u3092\u5217\u306b\u5bfe\u3059\u308b\u554f\u984c\u3078\u3068\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff0e \u672c\u8a18\u4e8b\u3067\u306f\u7279\u306b\uff0c\u90e8\u5206\u6728\u30af\u30a8\u30ea\uff0c\u30d1\u30b9\u30af\u30a8\u30ea\uff0c\u6700\u5c0f\u5171\u901a\u7956\u5148\u30af\u30a8\u30ea\u3078\u306e\u5fdc\u7528\u3092\u6271\u3044\u307e\u3059\uff0e 2. \u524d\u63d0\u77e5\u8b58 DFS\uff0e\u30bb\u30b0\u30e1\u30f3\u30c8\u6728\u306a\u3069\u306e\u30c7\u30fc\u30bf\u69cb\u9020\uff0e 3. \u30aa\u30a4\u30e9\u30fc\u30c4\u30a2\u30fc\u30c6\u30af\u30cb\u30c3\u30af \u6839\u4ed8\u304d\u6728\u306b\u5bfe\u3057\u3066\uff0c\u6839\u304b\u3089 DFS \u3092\u884c\u3046\u3053\u3068\u3067\uff0c\u5168\u3066\u306e\u8fba\u3092\u53cc\u65b9\u5411\u306b $1$ \u5ea6\u305a\u3064\u901a\u308b\u3088\u3046\u306a\u30a6\u30a9\u2026","type":"rich","height":"190","url":"https://info.atcoder.jp/entry/algorithm_lectures/euler_tour_technique","version":"1.0","author_name":"atcoder","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Finfo.atcoder.jp%2Fentry%2Falgorithm_lectures%2Feuler_tour_technique\" title=\"\u30aa\u30a4\u30e9\u30fc\u30c4\u30a2\u30fc\u30c6\u30af\u30cb\u30c3\u30af - AtCoderInfo\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":"https://cdn.user.blog.st-hatena.com/default_entry_og_image/158934417/1702097020779738","title":"\u30aa\u30a4\u30e9\u30fc\u30c4\u30a2\u30fc\u30c6\u30af\u30cb\u30c3\u30af","blog_title":"AtCoderInfo"}