{"id":167,"date":"2012-04-07T18:11:09","date_gmt":"2012-04-07T10:11:09","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=167"},"modified":"2012-04-07T18:11:09","modified_gmt":"2012-04-07T10:11:09","slug":"poj-3659-cell-phone-network","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/poj-3659-cell-phone-network\/","title":{"rendered":"POJ 3659. Cell Phone Network"},"content":{"rendered":"<p><!--more--><\/p>\n<p>\u7565\u3002\uff09<\/p>\n<pre class=\"brush: cpp; light: false; title: ; toolbar: true; notranslate\" title=\"\">\r\nconst int N = 10009;\r\n\r\nint dp0&#x5B;N], dp1&#x5B;N], dp2&#x5B;N];\r\n\r\nVI adj&#x5B;N]; bool vst&#x5B;N];\r\nint n;\r\n\r\nvoid dfs(int u = 0){\r\n    vst&#x5B;u] = true; int delta = INF; dp0&#x5B;u] = 1;\r\n\r\n#define v adj&#x5B;u]&#x5B;i]\r\n\r\n    REP(i, SZ(adj&#x5B;u])) if (!vst&#x5B;v]){\r\n        dfs(v), dp0&#x5B;u] += min(dp0&#x5B;v], dp1&#x5B;v], dp2&#x5B;v]), dp2&#x5B;u] += dp1&#x5B;v];\r\n        if (dp0&#x5B;v] &lt;= dp1&#x5B;v]) dp1&#x5B;u] += dp0&#x5B;v], delta = 0;\r\n        else dp1&#x5B;u] += dp1&#x5B;v], checkMin(delta, dp0&#x5B;v] - dp1&#x5B;v]);;\r\n    }\r\n\r\n    dp1&#x5B;u] += delta;\r\n}\r\n\r\nint main(){\r\n    int a, b; FOR_C(i, 1, _RD(n)) RD(a, b), --a, --b, adj&#x5B;a].PB(b), adj&#x5B;b].PB(a);\r\n    dfs(), OT(min(dp0&#x5B;0], dp1&#x5B;0]));\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"","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":[19],"tags":[],"class_list":["post-167","post","type-post","status-publish","format-standard","hentry","category-poj"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-2H","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/167","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=167"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/167\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=167"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}