{"id":973,"date":"2014-09-18T23:17:05","date_gmt":"2014-09-18T15:17:05","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=973"},"modified":"2014-09-18T23:21:50","modified_gmt":"2014-09-18T15:21:50","slug":"2014-acmicpc-asia-regional-xian-online","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/2014-acmicpc-asia-regional-xian-online\/","title":{"rendered":"2014 ACM\/ICPC Asia Regional Xi&#8217;an Online"},"content":{"rendered":"<h2>Problem 1010. Mart Master II <\/h2>\n<h3>Brief description: <\/h3>\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u8fb9\u6743\u6811\uff0c\u521d\u59cb\u65f6\uff0c\u4e00\u4e9b\u7ed3\u70b9\u4e0a\u5df2\u7ecf\u5efa\u7acb\u4e86\u5e02\u573a\u3002\u6bcf\u4e2a\u7ed3\u70b9\u4f1a\u88ab\u8ddd\u79bb\u81ea\u5df1\u6700\u8fd1\u7684\u5e02\u573a\u6240\u652f\u914d\uff08\u8ddd\u79bb\u76f8\u540c\u65f6\uff0c\u88ab\u6807\u53f7\u6700\u5c0f\u7684\u5e02\u573a\u652f\u914d\uff09\u3002<br \/>\n\u3002\u3002\u3002\u73b0\u5728\u4f60\u53ef\u4ee5\u65b0\u5efa\u4e00\u4e2a\u5e02\u573a\uff0c\u95ee\u65b0\u5efa\u7684\u5e02\u573a\u6700\u591a\u53ef\u4ee5\u652f\u914d\u591a\u5c11\u7ed3\u70b9\u3002<\/p>\n<h3>Analysis: <\/h3>\n<p>\u6811\u5206\u6cbb\u3002<\/p>\n<p>\u3002\u3002\u3002\u8003\u8651\u6bcf\u4e00\u4e2a\u5206\u6cbb\u4e2d\u5fc3 <code>c<\/code>\u3002\u3002\u3002<br \/>\n\u6211\u4eec\u9700\u8981\u6c42\u51fa\u5b83\u5bf9\u6bcf\u4e2a\u6240\u6709\u5b50\u6811\u4e2d\u7684\u7ed3\u70b9 <code>u<\/code> \u7684\u8d21\u732e\uff08\u4e5f\u5c31\u662f\u6709\u591a\u5c11\u7ed3\u70b9\uff0c\u5728\u6811\u4e2d\uff0c\u7ecf\u8fc7 <code>c<\/code>\uff0c\u88ab <code>u<\/code> \u7ed3\u70b9\u652f\u914d\uff09<\/p>\n<p>\u9996\u5148\u9700\u8981\u679a\u4e3e\u65b0\u5efa\u5e02\u573a\u7684\u7ed3\u70b9\u3002\u5bf9\u4e8e\u6240\u6709\u7ed3\u70b9\u3002\u3002\u6c42\u51fa\u8ddd\u79bb\u5176\u6700\u8fd1\u7684\u5e02\u573a\u7684\u8ddd\u79bb\u3002\u3002d[u]\u3002\u3002<br \/>\n\uff08\u8fd9\u4e00\u6b65\u628a\u6240\u6709 mart \u90fd\u6254\u5230\u8d77\u59cb\u70b9\u7684\u96c6\u5408\u91cc\u3002\u3002\u7528 <code>Dijkstra<\/code> \u641e\u641e\u5c31\u884c\u4e86\u3002\u3002<br \/>\n\u6ce8\u610f\u5230\u8ddd\u79bb\u76f8\u540c\u7684\u65f6\u5019\u8981\u53d6\u6807\u53f7\u6700\u5c0f\u7684\u3002\u3002\u6240\u4ee5\u8fd9\u91cc\u7684 <code>d[u]<\/code> \u9700\u8981\u5f00 <code>pair<int, int><\/code>\u3002\u3002\uff09<\/p>\n<p>\u3002\u3002\u6811\u5206\u6cbb\u7684\u90e8\u5206\u3002\u3002\u3002\u9700\u8981\u4e09\u904d <code>dfs()<\/code>\u3002\u3002<br \/>\n\u6211\u4eec\u5148 <code>dfs0()<\/code> \u6574\u68f5\u5b50\u6811&#8230;\u6c42\u51fa\u6bcf\u4e2a\u7ed3\u70b9 <code>u<\/code> \u5230 <code>c<\/code> \u7684\u8ddd\u79bb <code>dd<\/code>\uff0c\u4e0e <code>d[u]<\/code> \u6bd4\u8f83\u3002\u3002<br \/>\n\u5982\u679c <code>d[u] < dd<\/code> \u90a3\u4e48\u820d\u5f03\u3002\u3002\u5426\u5219\u52a0\u5165\u5e73\u8861\u6811\u3002\u8bb0\u505a <code>all<\/code>\u3002\u3002<\/p>\n<p>.. \u518d <code>dfs1()<\/code> \u4e00\u4e2a\u5206\u652f\u3002\u3002\u7c7b\u4f3c\u7684\u3002\u3002\u5f97\u5230 <code>sub<\/code>\u3002\u3002\u3002<br \/>\n\u3002\u3002\u518d <code>dfs2()<\/code> \u4e00\u4e2a\u5206\u652f\u3002\u3002\u6b64\u65f6\u53ef\u4ee5\u901a\u8fc7 <code>all - sub<\/code>\u3002\u3002\u3002\u7edf\u8ba1\u8fd9\u4e2a\u5206\u652f\u4e2d\u6240\u6709\u7ed3\u70b9\u7684\u8d21\u732e\u3002\u3002\u3002<\/p>\n<p>\uff08\u4e0a\u9762\u7684\u5e73\u8861\u6811\u4e5f\u53ef\u4ee5\u76f4\u63a5\u7528 <code>vector<\/code> \u6392\u5e8f\u540e\u4e8c\u5206\u3001\u3001\uff09\u3002<\/p>\n<p><a href=\"http:\/\/vjudge.net\/vjudge\/problem\/viewSource.action?id=2763104\">http:\/\/vjudge.net\/vjudge\/problem\/viewSource.action?id=2763104<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Problem 1010. Mart Master II Brief description: \u7ed9\u5b9a\u4e00\u4e2a\u8fb9\u6743\u6811\uff0c\u521d\u59cb\u65f6\uff0c\u4e00\u4e9b\u7ed3\u70b9\u4e0a\u5df2\u7ecf\u5efa\u7acb\u4e86\u5e02\u573a\u3002\u6bcf\u4e2a\u7ed3\u70b9\u4f1a\u88ab\u8ddd\u79bb\u81ea\u5df1\u6700\u8fd1\u7684\u5e02\u573a\u6240\u652f\u914d\uff08\u8ddd\u79bb\u76f8\u540c\u65f6\uff0c\u88ab\u6807\u53f7\u6700\u5c0f\u7684\u5e02\u573a\u652f\u914d\uff09\u3002 \u3002\u3002\u3002\u73b0\u5728\u4f60\u53ef\u4ee5\u65b0\u5efa\u4e00\u4e2a\u5e02\u573a\uff0c\u95ee\u65b0\u5efa\u7684\u5e02\u573a\u6700\u591a\u53ef\u4ee5\u652f\u914d\u591a\u5c11\u7ed3\u70b9\u3002 Analysis: \u6811\u5206\u6cbb\u3002 \u3002\u3002\u3002\u8003\u8651\u6bcf\u4e00\u4e2a\u5206\u6cbb\u4e2d\u5fc3 c\u3002\u3002\u3002 \u6211\u4eec\u9700\u8981\u6c42\u51fa\u5b83\u5bf9\u6bcf\u4e2a\u6240\u6709\u5b50\u6811\u4e2d\u7684\u7ed3\u70b9 u \u7684\u8d21\u732e\uff08\u4e5f\u5c31\u662f\u6709\u591a\u5c11\u7ed3\u70b9\uff0c\u5728\u6811\u4e2d\uff0c\u7ecf\u8fc7 c\uff0c\u88ab u \u7ed3\u70b9\u652f\u914d\uff09 \u9996\u5148\u9700\u8981\u679a\u4e3e\u65b0\u5efa\u5e02\u573a\u7684\u7ed3\u70b9\u3002\u5bf9\u4e8e\u6240\u6709\u7ed3\u70b9\u3002\u3002\u6c42\u51fa\u8ddd\u79bb\u5176\u6700\u8fd1\u7684\u5e02\u573a\u7684\u8ddd\u79bb\u3002\u3002d[u]\u3002\u3002 \uff08\u8fd9\u4e00\u6b65\u628a\u6240\u6709 mart \u90fd\u6254\u5230\u8d77\u59cb\u70b9\u7684\u96c6\u5408\u91cc\u3002\u3002\u7528 Dijkstra \u641e\u641e\u5c31\u884c\u4e86\u3002\u3002 \u6ce8\u610f\u5230\u8ddd\u79bb\u76f8\u540c\u7684\u65f6\u5019\u8981\u53d6\u6807\u53f7\u6700\u5c0f\u7684\u3002\u3002\u6240\u4ee5\u8fd9\u91cc\u7684 d[u] \u9700\u8981\u5f00 pair\u3002\u3002\uff09 \u3002\u3002\u6811\u5206\u6cbb\u7684\u90e8\u5206\u3002\u3002\u3002\u9700\u8981\u4e09\u904d dfs()\u3002\u3002 \u6211\u4eec\u5148 dfs0() \u6574\u68f5\u5b50\u6811&#8230;\u6c42\u51fa\u6bcf\u4e2a\u7ed3\u70b9 u \u5230 c \u7684\u8ddd\u79bb dd\uff0c\u4e0e d[u] \u6bd4\u8f83\u3002\u3002 \u5982\u679c d[u] < dd \u90a3\u4e48\u820d\u5f03\u3002\u3002\u5426\u5219\u52a0\u5165\u5e73\u8861\u6811\u3002\u8bb0\u505a all\u3002\u3002 .. \u518d dfs1() \u4e00\u4e2a\u5206\u652f\u3002\u3002\u7c7b\u4f3c\u7684\u3002\u3002\u5f97\u5230 sub\u3002\u3002\u3002 \u3002\u3002\u518d dfs2() \u4e00\u4e2a\u5206\u652f\u3002\u3002\u6b64\u65f6\u53ef\u4ee5\u901a\u8fc7 [&hellip;]\n<\/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":[],"class_list":["post-973","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-fH","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/973","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=973"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/973\/revisions"}],"predecessor-version":[{"id":974,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/973\/revisions\/974"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=973"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=973"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=973"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}