{"url":"https://tsubosaka.hatenadiary.org/entry/20080524/1211654058","blog_url":"https://tsubosaka.hatenadiary.org/","categories":["TopCoder"],"height":"190","title":"SRM402","published":"2008-05-24 03:34:18","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/tsubosaka/","author_name":"tsubosaka","type":"rich","width":"100%","version":"1.0","description":"250 \u5927\u304d\u3055\u304cn(A[j]\u3068\u306a\u3063\u3066\u3044\u308b\u30da\u30a2\u306b\u5bfe\u3057\u3066\u306e\u307f\u884c\u3046)\u3002\u305f\u3068\u3048\u3070(1,4,3,2)\u30674\u30682\u3092\u4ea4\u63db\u3059\u308b\u3068(1,2,3,4)\u3068\u306a\u3063\u3066\u4e00\u56de\u3067\u7d42\u4e86\u3059\u308b\u304c\u30013\u30682\u3092\u4ea4\u63db\u3057\u305f\u5834\u5408(1,4,2,3)\u3067\u7d42\u4e86\u3057\u306a\u3044\u3002\u3053\u306e\u3068\u304d\u4ea4\u63db\u306e\u56de\u6570\u306e\u671f\u5f85\u5024\u3092\u6c42\u3081\u3088\u3068\u3044\u3046\u554f\u984c\u3002 \u3053\u3053\u3067\u914d\u5217A\u306b\u95a2\u3057\u3066\u4ea4\u63db\u306e\u56de\u6570\u306e\u671f\u5f85\u5024\u3092E(A)\u3068\u304a\u304d\u3001\u307e\u305fA\u304b\u3089\u4e00\u56de\u306e\u59a5\u5f53\u306a\u4ea4\u63db\u3067\u3044\u3051\u308b\u914d\u5217\u306e\u96c6\u5408\u3092N(A)\u3068\u304a\u304f\u3068\u3001E(A)=1 + \\sum_{B \\in N(A)} E(B) / |N(A)|\u304c\u6210\u308a\u7acb\u3061\u3001\u307e\u305f\u72b6\u614b\u6570\u306f8!\u3057\u304b\u306a\u3044\u306e\u3067\u30e1\u30e2\u5316\u518d\u5e30\u3067\u89e3\u3051\u308b\u3002 450 .\u3068X\u304b\u3089\u306a\u308b\u6587\u5b57\u5217\u304c\u4e0e\u3048\u3089\u308c\u308b\u3002\u5217\u306f\u7aef\u70b9\u3067\u63a5\u89e6\u3057\u3066\u3044\u308b\u3068\u3059\u308b(\u5186\u5f62\u306b\u306a\u3063\u3066\u2026","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftsubosaka.hatenadiary.org%2Fentry%2F20080524%2F1211654058\" title=\"SRM402 - tsubosaka\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>","blog_title":"tsubosaka\u306e\u65e5\u8a18","image_url":null}