{"id":1022,"date":"2014-10-11T19:53:54","date_gmt":"2014-10-11T11:53:54","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=1022"},"modified":"2014-10-11T20:01:41","modified_gmt":"2014-10-11T12:01:41","slug":"vijos-1180-%e9%80%89%e8%af%be","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/vijos-1180-%e9%80%89%e8%af%be\/","title":{"rendered":"Vijos 1180. \u9009\u8bfe"},"content":{"rendered":"<p><a href=\"https:\/\/vijos.org\/p\/1180\">https:\/\/vijos.org\/p\/1180<\/a><\/p>\n<p><!--more--><\/p>\n<p>&#8230;<\/p>\n<p>O(nm^2)<br \/>\n<a href=\"https:\/\/vijos.org\/records\/543919bc17f3cade3fb0a871\">https:\/\/vijos.org\/records\/543919bc17f3cade3fb0a871<\/a><\/p>\n<pre class=\"brush: cpp; collapse: true; first-line: 1; light: false; title: example-filename.cpp; toolbar: true; notranslate\" title=\"example-filename.cpp\">\r\n\/\/}\/* .................................................................................................................................. *\/\r\n\r\nconst int N = int(3e2) + 9;\r\n\r\nVI adj&#x5B;N]; int f&#x5B;N]&#x5B;N], val&#x5B;N];\r\nint n, m;\r\n\r\nvoid dfs(int u = 0){\r\n\r\n    ECH(it, adj&#x5B;u]){\r\n        int v = *it; dfs(v);\r\n        DWN_1(i, m, 1) REP_1(j, i) checkMax(f&#x5B;u]&#x5B;i], f&#x5B;u]&#x5B;i-j]+f&#x5B;v]&#x5B;j]);\r\n    }\r\n\r\n    DWN_1(i, m, 1) f&#x5B;u]&#x5B;i] = f&#x5B;u]&#x5B;i-1] + val&#x5B;u];\r\n}\r\n\r\nint main(){\r\n\r\n#ifndef ONLINE_JUDGE\r\n    \/\/freopen(&quot;in.txt&quot;, &quot;r&quot;, stdin);\r\n    \/\/freopen(&quot;out.txt&quot;, &quot;w&quot;, stdout);\r\n#endif\r\n\r\n    REP_1_C(i, RD(n, m)){\r\n        adj&#x5B;RD()].PB(i);\r\n        RD(val&#x5B;i]);\r\n    }\r\n\r\n    ++m; dfs();\r\n    OT(f&#x5B;0]&#x5B;m]);\r\n}\r\n<\/pre>\n<p>O(nm)<br \/>\n<a href=\"https:\/\/vijos.org\/records\/5411eea148c5fcdb208b4568\">https:\/\/vijos.org\/records\/5411eea148c5fcdb208b4568<\/a><\/p>\n<pre class=\"brush: cpp; collapse: true; first-line: 1; light: false; title: example-filename.cpp; toolbar: true; notranslate\" title=\"example-filename.cpp\">\r\n\/\/}\/* .................................................................................................................................. *\/\r\n\r\nconst int N = int(3e2) + 9;\r\n\r\nVI adj&#x5B;N]; int f&#x5B;N]&#x5B;N], val&#x5B;N];\r\nint n, m;\r\n\r\nvoid dfs(int u = 0){\r\n    ECH(it, adj&#x5B;u]){\r\n        int v = *it; REP(i, m) f&#x5B;v]&#x5B;i] = f&#x5B;u]&#x5B;i] + val&#x5B;v]; \/\/ \u5f3a\u5236\u5728 u \u7684\u5f53\u524d\u72b6\u6001\uff08\u6240\u6709 dfs \u5e8f\u5728 v \u4e4b\u524d\u7684\u8282\u70b9\u6240\u5f62\u6210\u7684\u6cdb\u5316\u7269\u54c1\uff09\u4e2d\u653e\u5165\u7269\u54c1 v\u3002\u3002\u4f5c\u4e3a v \u7684\u521d\u59cb\u72b6\u6001\u3002\u3002\u3002\r\n        dfs(v); REP_1(i, m) checkMax(f&#x5B;u]&#x5B;i], f&#x5B;v]&#x5B;i-1]); \/\/ \u6cdb\u5316\u7269\u54c1\u7684\u5e76\u3002\u3002\u3002\r\n    }\r\n}\r\n\r\nint main(){\r\n\r\n    REP_1_C(i, RD(n, m)){\r\n        adj&#x5B;RD()].PB(i);\r\n        RD(val&#x5B;i]);\r\n    }\r\n\r\n    dfs();\r\n    OT(f&#x5B;0]&#x5B;m]);\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/vijos.org\/p\/1180<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[1],"tags":[138],"class_list":["post-1022","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-138"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-gu","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1022","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/comments?post=1022"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1022\/revisions"}],"predecessor-version":[{"id":1023,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1022\/revisions\/1023"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=1022"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=1022"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=1022"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}