{"blog_url":"https://yosupo.hatenablog.com/","type":"rich","provider_url":"https://hatena.blog","description":"1000\u306a\u3060\u3051\u3042\u3063\u3066\u975e\u5e38\u306b\u60a9\u3093\u3060\u3051\u3069\u3001\u9762\u767d\u304b\u3063\u305f\u3002 \u3059\u3079\u3066\u306e\u9053\u306f\u4ea4\u5dee\u3057\u306a\u3044\u3068\u3044\u3046\u306e\u304c\u975e\u5e38\u306b\u5f37\u3044\u5236\u7d04\u3002 \u307e\u305a\u306f\u5186\u74b0\u306fNG\u306a\u306e\u3067\u5207\u3063\u3066\u4f38\u3070\u3057\u3066\u5217\u306b\u3059\u308b\u3002 \u3053\u308c\u306e\u304a\u304b\u3052\u3067\u533a\u9593DP\u3068\u3057\u3066\u8003\u3048\u3089\u308c\u308b\u3002 \u307e\u305f\u3001n % 2 == 1\u306e\u5834\u5408\u306f\u7b54\u30481\u306b\u306a\u308b\u4e8b\u3068(r-l) % 2 == 0\u3068\u306a\u308b\u6a4b\u306f\u5168\u90e8\u7121\u304b\u3063\u305f\u4e8b\u306b\u3057\u3066\u3044\u3044\u3053\u3068\u304c\u5206\u304b\u308b\u3002\u3053\u308c\u3092\u7121\u8996\u3059\u308b\u3068\u4e00\u6c17\u306b\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u304c\u697d\u306b\u306a\u308b\u3002 f([l, r]) := \u533a\u9593[l, r]\u306e\u6a4b\u306e\u6e21\u3057\u65b9\u306e\u901a\u308a\u3068\u3059\u308c\u3070\u3044\u3044 \u306a\u306e\u3067\u3053\u308c\u3067\u72b6\u614b\u6570O(N^2)\u306e\u533a\u9593DP\u306b\u306a\u308b \u3053\u3053\u3067\u3001f([l, r])\u3092\u6c42\u3081\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u8003\u3048\u308b\u3002\u3053\u308c\u306f\u3001\u6a4b\u304c\u4ea4\u5dee\u3057\u306a\u3044\u3068\u3044\u3046\u5236\u7d04\u3092\u5229\u7528\u3059\u308b\u3068\u9ad8\u901f\u306b\u6c42\u3081\u3089\u308c\u2026","height":"190","categories":[],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyosupo.hatenablog.com%2Fentry%2F2014%2F12%2F29%2F224402\" title=\"AOJ-ICPC2405 \u59c9\u59b9\u6e2f - \u3088\u3059\u307d\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2014-12-29 22:44:02","width":"100%","author_name":"yosupo","title":"AOJ-ICPC2405 \u59c9\u59b9\u6e2f","image_url":null,"provider_name":"Hatena Blog","url":"https://yosupo.hatenablog.com/entry/2014/12/29/224402","version":"1.0","author_url":"https://blog.hatena.ne.jp/yosupo/","blog_title":"\u3088\u3059\u307d\u306e\u65e5\u8a18"}