{"id":890,"date":"2014-05-27T11:07:18","date_gmt":"2014-05-27T03:07:18","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=890"},"modified":"2016-08-24T19:30:49","modified_gmt":"2016-08-24T11:30:49","slug":"2014-acmicpc-%e5%8c%97%e4%ba%ac%e9%82%80%e8%af%b7%e8%b5%9b","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/2014-acmicpc-%e5%8c%97%e4%ba%ac%e9%82%80%e8%af%b7%e8%b5%9b\/","title":{"rendered":"2014 ACM\/ICPC \u5317\u4eac\u9080\u8bf7\u8d5b"},"content":{"rendered":"<p><a href=\"http:\/\/acmicpc.info\/archives\/1703\">http:\/\/acmicpc.info\/archives\/1703<\/a><br \/>\n<a href=\"http:\/\/www.cnblogs.com\/kuangbin\/p\/3744817.html\">http:\/\/www.cnblogs.com\/kuangbin\/p\/3744817.html<\/a><\/p>\n<p><!--more--><\/p>\n<h2>Problem A. Matrix<\/h2>\n<h3>Analysis:<\/h3>\n<p>\u3010\u8d2a\u5fc3\u3011\u3010\u9012\u5f52\u3011\u3010\u751f\u6210\u94fe\u3011<br \/>\n\u6bd4\u8f83\u5bb9\u6613\u5199\u9519\u3002<br \/>\n\u3002\u3002\u3002\u4e0d\u96be\u5f52\u7eb3\u751f\u6210\u77e9\u9635\u7684\u6027\u8d28\u3002<br \/>\n1. \u6bcf\u884c\u7684\u6570\u5355\u8c03\u9012\u589e\u3002\uff08\u3002\u3002\u3002\u56e0\u4e3a\u6bcf\u4e2a\u683c\u5b50\u7684\u6570\u53ea\u6709\u53ef\u80fd\u51cf\u5c0f\uff0c\u4e14\u6700\u5927\u7684\u6570\u4e00\u5b9a\u51fa\u73b0\u5728\u884c\u672b\u5c3e\uff09<br \/>\n2. \u6bcf\u884c\u7684 size \u5355\u8c03\u9012\u51cf\u3002\u3002\u3002\uff08\u56e0\u4e3a\u4e0b\u65b9\u7684\u6570\uff0c\u603b\u662f\u88ab\u540e\u51fa\u73b0\u7684\u8f83\u5c0f\u7684\u6570\u9876\u4e0b\u53bb\u7684\u3002\u3002\uff09<\/p>\n<p>\u89c2\u5bdf\u4e00\u4e9b\u6570\u636e\u3002\u3002\u3002<\/p>\n<pre>4 3\r\n2 1 3\r\n1 2\r\n1 4 \r\n<\/pre>\n<p>\u3002\u3002\u8fd9\u4e2a\u663e\u7136\u662f <code>4 2 1 3<\/code> \u3002\u3002\u3002\u3002<\/p>\n<p>\u3002\u3002\u3002\u8003\u8651\u5b9a\u4f4d\u5f53\u524d\u6700\u5927\u7684\u6570\u5728 \u8f93\u5165\u5e8f\u5217 \u4e2d\u7684\u4f4d\u7f6e\u3002\u3002<br \/>\n\u3002\u3002\u4e3a\u4e86\u5f97\u5230\u9006\u5e8f\u5b57\u5178\u5e8f\u6700\u5927\u3002\u3002\u6211\u4eec\u5e0c\u671b\u5b83\u53ef\u4ee5\u5c3d\u53ef\u80fd\u7684\u5f80\u540e\u3002\u3002<br \/>\n\u3002\u3002\u3002\u6211\u4eec\u4ece 4 \u5f00\u59cb\u3002\u3002\u5411\u4e0a\u5265\u5f00\u751f\u6210 4 \u7684\u94fe 1-2-4 \u3002\u3002\u3002\u4f46\u662f\u53d1\u73b0\u6b64\u65f6 1 \u5e76\u4e0d\u662f\u5176\u6240\u5728\u884c\u7684\u6700\u672b\u5c3e\u6570\u3002\u3002\u3002<br \/>\n\u3002\u3002\u56e0\u6b64 3 \u5fc5\u987b\u5728\u8fd9\u6761\u94fe\u4e4b\u540e\u63d2\u5165\u3002\u3002\u3002\u3002\u4e8e\u662f\u6211\u4eec\u4f18\u5148\u9012\u5f52 3 \u3002\u3002\u3002<\/p>\n<p>\u4e8e\u662f\u5c31\u662f\u4e24\u4e2a\u51fd\u6570\u3002\u3002\u3002<br \/>\n<code>bool gao();<\/code> \u4ece\u5927\u5230\u5c0f\u679a\u4e3e\u6ca1\u6709\u5b9a\u4f4d\u7684\u6570\uff0c\u5c06\u5b83\u4eec\u4e00\u6b21 bao() \u5f00\u3002\u3002\u3002<br \/>\n<code>bool bao(int ii);<\/code> \u9012\u5f52\u5c1d\u8bd5\u5265\u5f00 ii \u3002\u3002C[ii] \u8868\u793a ii \u6240\u5728\u7684\u884c\u53f7\uff0c-1 \u8868\u793a\u5df2\u7ecf\u5b9a\u4f4d\u3002\u3002\u3002<br \/>\n\u8fd9\u6837\u4e0d\u9700\u8981\u4e8c\u5206\u3002\u3002\u3002\u603b\u7684\u590d\u6742\u5ea6\u662f <code>O(n)<\/code> \u3001\u3002\u3002\u3002<\/p>\n<h2>Problem B. Beautiful Garden<\/h2>\n<h3>Brief description:<\/h3>\n<p>\u3002\u3002\u3002\u7ed9\u5b9a\u4e00\u7ec4\u5e8f\u5217\uff0c\u4fee\u6539\u6700\u5c11\u7684\u5143\u7d20\uff0c\u4f7f\u5f97\u8be5\u5e8f\u5217\u6392\u5e8f\u540e\u662f\u4e00\u4e2a\u7b49\u5dee\u5e8f\u5217\u3002<\/p>\n<h3>Analysis:<\/h3>\n<pre>\u89c2\u5bdf\u4e00\u4e9b\u6570\u636e\u3002\u3002\r\n1 4 6 100 1000 10000\r\n\u7ed3\u679c\u662f\u3002\u3002\r\n1 *2 *3 4 *5 6\r\n<\/pre>\n<p>\u3002\u3002\u3002\u6700\u7ec8\u5e8f\u5217\u7684\u9996\u4f4d\u7f6e\u4e00\u5b9a\u53ef\u4ee5\u662f\u539f\u5e8f\u5217\u4e2d\u7684\u67d0\u4e2a\u6570\uff08\u56e0\u4e3a\u4fee\u6539\u7684\u4efb\u610f\u6027\uff0c\u4f60\u53ef\u4ee5\u5c3d\u53ef\u80fd\u7684\u653e\u5230\u540e\u9762\u3002\uff09<br \/>\n\u3002\u3002\u9664\u6b64\u4e4b\u5916\uff0c\u8fd8\u53ef\u4ee5\u81f3\u5c11\u6709\u4e00\u4e2a\u6570\u4e0d\u4fee\u6539\u3002\u3002\u3002\u679a\u4e3e\u8fd9\u4e24\u4e2a\u6570\u3002\u3002\u3002<br \/>\n\u3002\u3002\u3002\u518d\u679a\u4e3e\u516c\u5dee dd\u3002\u3002<\/p>\n<p>\uff08\u3002\u3002\u3002\u6ce8\u610f\u8fd9\u4e00\u6b65\u4e0d\u9700\u8981\u679a\u4e3e\u6240\u6709\u53ef\u80fd\u7684\u516c\u5dee\u3002\u3002<br \/>\n\u3002\u6211\u4eec\u53ea\u9700\u8981\u679a\u4e3e\u8fd9\u4e24\u4e2a\u6570\u4e4b\u95f4\u5305\u542b\u7684\u6570\u7684\u4e2a\u6570\u3002\u3002<br \/>\n..\u3002\u800c\u8fd9\u4e2a\u503c\u4e0d\u4f1a\u8d85\u8fc7 n-2 \u3002\u3002\uff09<\/p>\n<p>\u6ce8\u610f\uff1a<br \/>\n\u3002\u3002<code>long long<\/code> \uff1f\uff08\u8fd9\u79cd\u9898\u76ee\u6570\u636e\u662f int \u4f46\u662f\u8fd0\u7b97\u8fc7\u7a0b\u4e2d\u6709\u53ef\u80fd\u662f long long \u7684\u8981\u5c24\u4e3a\u5c0f\u5fc3\u3002\u3002<br \/>\n\u3002<code>dd = 0<\/code> \uff1f<br \/>\n<code>n &lt;= 2<\/code>\uff1f<\/p>\n<h2>Problem C. Champions League<\/h2>\n<h3>Brief description:<\/h3>\n<p>\u3002\u3002\u3002\u3002\u8fd9\u4e2a\u9898\u771f\u662f\u76f8\u5f53\u4e4b\u8d5e\u3002\u3002\u3002<br \/>\n\u3002\u3002\u4e0d\u59a8\u5148\u6765\u770b\u4e00\u79cd <code>naive<\/code> \u7684\u505a\u6cd5\u3002\u3002\u3002\u3002<\/p>\n<p>\u3002\u3002\u3002\u5bf9\u6bcf\u4e00\u4e2a <code>group<\/code>\u3002\u3002\u3002\u679a\u4e3e <code>2^3<\/code> \u79cd\u60c5\u51b5\u3002\uff08\u8003\u8651 0-1, 0-2, 0-3 \u3001\u3001\u3002\u3002\uff09\u3002\u3002\u3002<br \/>\n\u3002\u3002\u6bcf\u6b21\uff0c\u5f97\u5230 6 \u5bf9\u6570\uff0c\u5bf9\u6bcf\u5bf9\u6570\u53d6 <code>max<\/code> \u5f97\u5230\u8fd9\u4e00\u5929\u7684\u6700\u5927\u5f97\u5206\u3002\u3002\u3002<br \/>\n\u3002\u3002\u6392\u5e8f\u540e\u53d6\u524d\u7f00\u548c\u3002\u3002\u5c31\u53ef\u4ee5\u5f97\u5230\u5bb9\u91cf <code>1~6<\/code>\u3001<code>6<\/code> \u4e2a \u7269\u54c1\u3002\u3002\u3002\u7136\u540e\u5916\u56f4 <code>0\/1<\/code> \u80cc\u5305\u3002\u3002\u3002<\/p>\n<p>\u3002\u3002\u4e0d\u5e78\u7684\u662f\u3002\u3002\u8fd9\u4e2a\u505a\u6cd5\u662f\u53ea\u80fd\u4fdd\u8bc1 <code>group<\/code> \u5185\u6ca1\u6709\u51b2\u7a81\u7684\u3002\u3002\u3002<\/p>\n<p><a href=\"https:\/\/www.shuizilong.com\/house\/wp-content\/uploads\/2014\/05\/1.jpg\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"902\" data-permalink=\"https:\/\/www.shuizilong.com\/house\/archives\/2014-acmicpc-%e5%8c%97%e4%ba%ac%e9%82%80%e8%af%b7%e8%b5%9b\/1-9\/\" data-orig-file=\"https:\/\/www.shuizilong.com\/house\/wp-content\/uploads\/2014\/05\/1.jpg\" data-orig-size=\"510,247\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"1\" data-image-description=\"\" data-image-caption=\"\" data-medium-file=\"https:\/\/www.shuizilong.com\/house\/wp-content\/uploads\/2014\/05\/1.jpg\" data-large-file=\"https:\/\/www.shuizilong.com\/house\/wp-content\/uploads\/2014\/05\/1.jpg\" class=\"aligncenter size-full\" src=\"https:\/\/www.shuizilong.com\/house\/wp-content\/uploads\/2014\/05\/1.jpg\" alt=\"1\" width=\"510\" height=\"247\" class=\"aligncenter size-full wp-image-902\" \/><\/a><\/p>\n<p>\u3002\u3002\u3002\u3002\u8fd9\u6837\u4e00\u6765\u6211\u4eec\u4f3c\u4e4e\u9700\u8981\u52a0\u7ef4\u6765\u63cf\u8ff0\u8fd9\u79cd\u7ed3\u5bf9\u4fe1\u606f\u3002\u3002\u3002\u3002\u3002\u4f46\u662f\u7a0d\u4f5c\u5c1d\u8bd5\u540e\u6211\u4eec\u53d1\u73b0\u8fd9\u6837\u5904\u7406\u8ba8\u8bba\u8d77\u6765\u4f1a\u8fc7\u4e8e\u590d\u6742\u3002\u3002\u3002<br \/>\n\u3002\u3002\u4e0d\u5982\u76f4\u63a5\u66b4\u529b <code>1&lt;&lt;6<\/code> \u72b6\u6001\u538b\u7f29 <code>DP<\/code> \u6765\u7684\u6709\u6548\u3002\u3002\u3002\u3002<\/p>\n<p>\u3002\u3002\u3002\u4f46\u662f\u8fd9\u6837\u4f1a <code>TLE<\/code>\u3002\u3002\u6211\u4eec\u53d1\u73b0\u5176\u5b9e\u53ea\u9700\u8981\u4fdd\u7559\u6700\u5927\u7684 <code>6<\/code> \u4e2a\u5c0f\u7ec4\u5373\u53ef\u3002<br \/>\n\u3002\u3002 \uff08\u628a\u591a\u6709 <code>a[][]<\/code> \u585e\u5230\u4e00\u4e2a <code>vector<\/code> \u91cc\u4ece\u5927\u5230\u5c0f\u6392\u5e8f\u6bd4\u8f83\u3002\u3002\uff09\u3002\u3002\u3002<br \/>\n\u3002\u3002\uff08\u56e0\u4e3a\u6211\u4eec\u53ea\u4f1a\u53d6 <code>6<\/code> \u5929\u3002\u3002\u6700\u5dee\u60c5\u51b5\u3002\u5982\u679c\u6bcf\u4e2a <code>group<\/code> \u53ea\u8f6c\u64ad\u4e00\u573a\u3002\u3002\u4e5f\u53ea\u9700\u8981\u7528\u5230\u524d <code>6<\/code> \u4e2a\u5c0f\u7ec4\u3002\u3002\uff09<br \/>\n\u3002\u3002\u3002\u3002<\/p>\n<h3>External link:<\/h3>\n<p><a href=\"https:\/\/gist.github.com\/lychees\/e6ea2af33bac01288cc8\">https:\/\/gist.github.com\/lychees\/e6ea2af33bac01288cc8<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>http:\/\/acmicpc.info\/archives\/1703 http:\/\/www.cnblogs.com\/kuangbin\/p\/3744817.html<\/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":[164],"tags":[],"class_list":["post-890","post","type-post","status-publish","format-standard","hentry","category-onsite"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-em","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/890","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=890"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/890\/revisions"}],"predecessor-version":[{"id":900,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/890\/revisions\/900"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=890"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=890"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=890"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}