{"id":2070,"date":"2022-12-13T03:00:06","date_gmt":"2022-12-12T19:00:06","guid":{"rendered":"https:\/\/www.shuizilong.com\/house\/?p=2070"},"modified":"2022-12-13T05:48:49","modified_gmt":"2022-12-12T21:48:49","slug":"atcoder-beginner-contest-281","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/atcoder-beginner-contest-281\/","title":{"rendered":"AtCoder Beginner Contest 281"},"content":{"rendered":"<ul>\n<li><a href=\"https:\/\/atcoder.jp\/contests\/abc281\/tasks\">https:\/\/atcoder.jp\/contests\/abc281\/tasks<\/a><\/li>\n<\/ul>\n<h2>C<\/h2>\n<p>\u7ecf\u5178\u4e24\u4e2a\u5806\u3002<\/p>\n<h2>D<\/h2>\n<p>\u80cc\u5305\u3002<\/p>\n<h2>E.<\/h2>\n<p>\u7ecf\u5178 Tire \u6811 DP\u3002<\/p>\n<h2>G.<\/h2>\n<p>\u7ec4\u5408 dp\u3002\u6bd4\u8d5b\u5199\u7684\u662f\uff1a<br \/>\ndp[i][j][k]\uff1a\u524d i \u5c42\uff0c\u4e00\u5171\u7528\u4e86 j \u4e2a\u9876\u70b9\uff0c\u4e14\u7b2c i \u5c42\u4f7f\u7528\u4e86 k \u4e2a\u3002<br \/>\n\u8f6c\u79fb O(n) \u4e00\u5171 O(n4) \u7ed3\u679c\u53d1\u73b0\u6ca1\u529e\u6cd5\u7b80\u5355\u7684\u7528\u524d\u7f00\u548c\u964d\u4f4e\u590d\u6742\u5ea6\u3002<\/p>\n<p>\u6b63\u786e\u7684\u65b9\u6cd5\u662f\u7b80\u5316\u72b6\u6001\uff01\u4e0d\u8003\u8651\u5206\u4e86\u51e0\u5c42\uff0c\u76f4\u63a5\u7528\u5df2\u7ecf\u8003\u5bdf\u8fc7\u7684\u9876\u70b9\u6570\u5212\u5206\u9636\u6bb5\uff1a<br \/>\ndp[i][j]\uff1a\u4e00\u5171\u7528\u4e86 i \u4e2a\u9876\u70b9\uff0c\u4e14\u6700\u5916\u5c42\u4f7f\u7528\u4e86 j \u4e2a\u3002<\/p>\n<h2>Ex.<\/h2>\n<p>\u6784\u9020\u751f\u6210\u51fd\u6570\uff0c\u8d34\u591a\u9879\u5f0f\u6a21\u677f\u3002<\/p>\n<ul>\n<li><a href=\"https:\/\/zhuanlan.zhihu.com\/p\/590914324\">https:\/\/zhuanlan.zhihu.com\/p\/590914324<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/atcoder.jp\/contests\/abc281\/tasks C \u7ecf\u5178\u4e24\u4e2a\u5806\u3002 D \u80cc\u5305\u3002 E. \u7ecf\u5178 Tire \u6811 DP\u3002 G. \u7ec4\u5408 dp\u3002\u6bd4\u8d5b\u5199\u7684\u662f\uff1a dp[i][j][k]\uff1a\u524d i \u5c42\uff0c\u4e00\u5171\u7528\u4e86 j \u4e2a\u9876\u70b9\uff0c\u4e14\u7b2c i \u5c42\u4f7f\u7528\u4e86 k \u4e2a\u3002 \u8f6c\u79fb O(n) \u4e00\u5171 O(n4) \u7ed3\u679c\u53d1\u73b0\u6ca1\u529e\u6cd5\u7b80\u5355\u7684\u7528\u524d\u7f00\u548c\u964d\u4f4e\u590d\u6742\u5ea6\u3002 \u6b63\u786e\u7684\u65b9\u6cd5\u662f\u7b80\u5316\u72b6\u6001\uff01\u4e0d\u8003\u8651\u5206\u4e86\u51e0\u5c42\uff0c\u76f4\u63a5\u7528\u5df2\u7ecf\u8003\u5bdf\u8fc7\u7684\u9876\u70b9\u6570\u5212\u5206\u9636\u6bb5\uff1a dp[i][j]\uff1a\u4e00\u5171\u7528\u4e86 i \u4e2a\u9876\u70b9\uff0c\u4e14\u6700\u5916\u5c42\u4f7f\u7528\u4e86 j \u4e2a\u3002 Ex. \u6784\u9020\u751f\u6210\u51fd\u6570\uff0c\u8d34\u591a\u9879\u5f0f\u6a21\u677f\u3002 https:\/\/zhuanlan.zhihu.com\/p\/590914324<\/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":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[1],"tags":[],"class_list":["post-2070","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-xo","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/2070","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=2070"}],"version-history":[{"count":3,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/2070\/revisions"}],"predecessor-version":[{"id":2073,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/2070\/revisions\/2073"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=2070"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=2070"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=2070"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}