{"id":386,"date":"2012-08-18T03:05:50","date_gmt":"2012-08-17T19:05:50","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=386"},"modified":"2012-08-18T03:41:29","modified_gmt":"2012-08-17T19:41:29","slug":"andrew-stankevichs-contest-3","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/andrew-stankevichs-contest-3\/","title":{"rendered":"Andrew Stankevich\u2019s Contest #3"},"content":{"rendered":"<h3>Overview: <\/h3>\n<p>\u3002\u3002#3 \u7684\u6784\u9020\u9898\u90fd\u662f\u6bd4\u8f83\u7b80\u5355\u7684\u5566\u3002\u3002\uff08C, E, H \u3002\u3002\u3002<br \/>\n.. \u53e6\u5916\u6709\u4e24\u9053\u5f88\u7ecf\u5178\u7684\u56fe\u8bba \uff08B, D  \u3002\u3002\u3002<br \/>\n&#8230; \u5f53\u7136\u6700\u63a8\u8350\u7684\u8fd8\u662f A \u9898\u3002\u3002\u3002<\/p>\n<p><!--more--><\/p>\n<p><a href=\"http:\/\/acm.hust.edu.cn:8080\/judge\/contest\/view.action?cid=1231#overview\">http:\/\/acm.hust.edu.cn:8080\/judge\/contest\/view.action?cid=1231#overview<\/a><\/p>\n<p>Problem A. Areas:<br \/>\n&#8230; \u5e73\u9762\u5185\u7ed9\u5b9a n \u6761\u76f4\u7ebf\uff0c\u6c42\u5c01\u95ed\u533a\u57df\u7684\u4e2a\u6570\u4ee5\u53ca\u5b83\u4eec\u7684\u9762\u79ef\u3002<br \/>\n\u3002\u3002( n <= 80 .. \u3002\u3002\u3002\n\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\n\u3002\u3002\u3002\u5148\u6c42\u4ea4\u70b9\uff0c\u4e4b\u540e\u5bf9\u76f8\u90bb\u7684\u4ea4\u70b9\u8fde\u8fb9\u3002\uff08\u88ab\u540c\u4e00\u6761\u7ebf\u6bb5\u8986\u76d6\u3002\u3002\u4e14\u4e2d\u95f4\u6ca1\u6709\u5176\u4ed6\u4ea4\u70b9\u9694\u5f00\u3002\u3002\u3002\u3002\n\u3002\u3002\u90a3\u4e48\u5c01\u95ed\u533a\u57df\u7b49\u4ef7\u4e8e\u5e73\u9762\u56fe\u4e2d\u7684\u73af\u3002\u3002\u90a3\u4e48\u4ee5\u9006\u65f6\u9488\u4e3a\u8f74\u3002\u3002\u4e3a\u4e86\u5206\u5272\u51fa\u6700\u5c0f\u7684\u5c01\u95ed\u533a\u57df\uff0c\n\u3002\u3002\u6211\u4eec\u53ea\u8981\u4ece\u4efb\u610f\u8fb9\u5f00\u59cb\uff0c\u6bcf\u6b21\u5f80\u6700\u91cc\u4fa7\u7684\u4f4d\u7f6e\u65cb\u8f6c\u5373\u53ef\u3002\u3002O(m) \u65f6\u95f4\u5373\u53ef\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u3002\u3002\n\u3002\u3002\u3002\u6240\u4ee5\u603b\u7684\u590d\u6742\u5ea6\u662f\u5efa\u56fe\u7684\u590d\u6742\u5ea6\u3002\u3002O(n^2logn)\u3002\u3002\n\n\n<a href=\"http:\/\/acm.hust.edu.cn:8080\/judge\/problem\/viewSource.action?id=605136\">\u3002\u8ba1\u7b97\u51e0\u4f55\u3002\u3002\uff0880ms\u3002\u3002\u3002<\/a><br \/>\n\uff08\u6ce8\u610f\u4ee3\u7801\u8fd9\u91cc\u6211\u7981\u6b62\u5411\u987a\u65f6\u9488\u65b9\u5411\u8f6c\u79fb\uff0c\u5982\u679c\u5141\u8bb8\u3002\u3002\u90a3\u4e48\u4f1a\u987a\u65f6\u9488\u65b9\u5411\u4f1a\u591a\u5206\u5272\u51fa\u4e00\u4e2a\u5305\u542b\u6240\u6709\u8fd9\u4e9b\u6781\u5c0f\u5c01\u95ed\u533a\u57df\u7684\u5927\u5c01\u95ed\u533a\u57df\u3002\u3002<\/p>\n<p>\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014<br \/>\n(\u3002\u3002\u8865\u5145\u8bf4\u660e\u4e00\u4e0b\u7cbe\u5ea6\u95ee\u9898\u3002\u3002\u8fd9\u4e2a\u771f\u662f\u6298\u78e8\u6b7b\u4eba\u4e86\u3002\u3002\u5f53\u7136\u6700\u53ef\u9760\u65b9\u6cd5\u8fd8\u662f\u662f\u7528\u5206\u6570\u7684\u5f62\u5f0f\u4fdd\u5b58\u6bcf\u4e2a double\u3002\u3002\u3002\u3002<br \/>\n\u3002\u3002\u8fd9\u6837\u7684\u8bdd\u4e2d\u95f4\u5bf9\u6bcf\u4e2a\u7b97\u5f0f\u9664\u7684\u5730\u65b9\u90fd\u4e58\u4e0a\u6765\u3002\u3002\u8fd9\u6837\u867d\u7136\u5b89\u5168\u6709\u6548\u4f46\u662f\u6539\u7d2f\u6b7b\u4e86\u3002\u3002\u3002<br \/>\n\u3002\u3002\u3002\u540e\u6765\u53d1\u73b0\u5176\u5b9e\u522b\u7684\u5730\u65b9\u6709 bug \u800c\u5df2\u3002\u3002\u603b\u4e4b\u751f\u5361\u7cbe\u5ea6\u7684\u9898\u5176\u5b9e\u8fd8\u662f\u6ca1\u6709\u7684\u5427\uff1f\u3002\u3002\u3002WA \u7684\u8bdd\u53ef\u80fd\u8fd8\u662f\u522b\u7684\u5176\u4ed6\u7684\u5730\u65b9\u5199\u75b5\u4e86\u3002\u3002<\/p>\n<p><a href=\"http:\/\/paste.ubuntu.com\/1140248\/\">\uff08\u3002\u3002\u5220\u53bb\u7b2c721\u884c\u53ef AC\u3002\u3002\uff08\uff1f\uff1f\uff1f\u3002\u3002\u3002<\/a><\/p>\n<p>Problem B. Beloved Sons:<br \/>\n<a href=\"http:\/\/paste.ubuntu.com\/1134022\/\">\u5308\u7259\u5229\u7b97\u6cd5\uff08120ms +-..<\/a><\/p>\n<p>Problem C. Strange Counter:<br \/>\n<a href=\"http:\/\/acm.hust.edu.cn:8080\/judge\/problem\/viewSource.action?id=603764\">\u3002\u3002\u6784\u9020 -> \u4e0d\u53d8\u5f0f\u3002\u3002<\/a><\/p>\n<p>Problem D. Data Transmission:<br \/>\n<a href=\"http:\/\/acm.hust.edu.cn:8080\/judge\/problem\/viewSource.action?id=592598\">\u8d2a\u5fc3\u521d\u59cb\u6d41 + Dinitz() (0.8s +- \u3002\u3002<\/a><\/p>\n<p>Problem E. Strong Defence:<br \/>\n<a href=\"http:\/\/acm.hust.edu.cn:8080\/judge\/problem\/viewSource.action?id=594228\">\u6784\u9020 -> bfs()..\u3002<\/a><\/p>\n<p>Problem F. Weird Dissimilarity:<br \/>\n<a href=\"http:\/\/acm.hust.edu.cn:8080\/judge\/problem\/viewSource.action?id=594653\">dp()..<\/a><\/p>\n<p>Problem G. PL\/Cool<br \/>\nTags: \u89e3\u91ca\u5668\u3001\u8868\u8fbe\u5f0f\u6c42\u503c\u3001\u5e76\u67e5\u96c6\u3001\u5b57\u7b26\u4e32 Hash<br \/>\n&#8230;<br \/>\n<a href=\"http:\/\/acm.hust.edu.cn:8080\/judge\/problem\/viewSource.action?id=596532\">\u3002\u3002\u3002<\/a><\/p>\n<p>Problem H. Royal Federation:<br \/>\n\u4e00\u4e2a\u56fd\u5bb6\u6709 n \u4e2a\u57ce\u5e02\uff0c\u4e14\u57ce\u5e02\u4e4b\u95f4\u7684\u9053\u8def\u5f62\u6210\u4e00\u68f5\u6811\uff0c\u73b0\u5728\u8981\u6c42\u5212\u5206\u51fa\u82e5\u5e72\u4e2a\u7701\uff0c\u4f7f\u5f97\u6bcf\u4e2a\u7701\u7684\u57ce\u5e02\u6570\u76ee\u5c5e\u4e8e [B, 3B]\u3002<br \/>\n\u5e76\u4e3a\u6bcf\u4e2a\u7701\u6307\u5b9a\u4e00\u4e2a\u7701\u4f1a\uff0c\u4f7f\u5f97\u5c5e\u4e8e\u8be5\u7701\u7684\u6240\u6709\u57ce\u5e02\uff0c\u90fd\u53ef\u4ee5\u5728\u8be5\u7701\u5185\u90e8\u7684\u8303\u56f4\u5185\u5230\u8fbe\u7701\u4f1a\u3002<br \/>\n\uff08\u7701\u4f1a\u4e0d\u8981\u6c42\u4e0d\u5728\u7701\u5185\u3002\u3002\uff09<\/p>\n<p>\u9012\u5f52\u6784\u9020\uff0c\u6ee1\u8db3\u6761\u4ef6\u7684\u65b9\u6848\u4e00\u5b9a\u5b58\u5728\u3002\u8bbe dfs() \u4e2d\u82e5\u8bbf\u95ee\u5230\u70b9 u \u65f6\uff0c\u5176\u5b50\u6811\u7684 size \u90fd\u4e0d\u8d85\u8fc7 B\uff0c<br \/>\n\u90a3\u4e48\u628a\u5b83\u4eec\u5408\u5e76\u6210\u82e5\u5e72 [B, 2B] \u4e4b\u95f4\u7684\u70b9\u96c6\uff0c\u5e76\u4ee5 u \u70b9\u4f5c\u4e3a\u7701\u4f1a\u3002\u5269\u4e0b\u6765\u7684\u70b9\u96c6\u6570\u76ee+\u4e0a u \u70b9\u81ea\u5df1\u4e00\u5b9a\u4e0d\u8d85\u8fc7 B\u3002<\/p>\n<p>\u6700\u540e\u4f1a\u5269\u4e0b\u4e0e\u6839\u8282\u70b9\u76f8\u8fde\u7684\u4e0d\u8d85\u8fc7 B \u4e2a\u70b9\u7684\u96c6\u5408\uff0c\u4efb\u9009\u4e00\u4e2a\u4e0e\u8be5\u96c6\u5408\u76f8\u90bb\u7684\u96c6\u5408\u4e0e\u4e4b\u5408\u5e76\u5373\u53ef\u3002<br \/>\n\u8fd9\u6837\u9664\u4e86\u4e0e\u6839\u7ed3\u70b9\u76f8\u8fde\u7684\u8fd9\u4e2a\u70b9\u96c6\u5916\uff0c\u5176\u4ed6\u70b9\u96c6\u7684\u5927\u5c0f\u90fd\u662f [B, 2B] \u4e4b\u95f4\u3002\u3002<\/p>\n<p><a href=\"http:\/\/acm.hust.edu.cn:8080\/judge\/problem\/viewSource.action?id=595848\">\u3002\u3002\u3002<\/a><\/p>\n<p>Problem I. Two Cylinders<br \/>\n$latex V = 8\\int_0^{Min(r_1, r_2)} \\sqrt{(r_1^2-x^2)(r_2^2-x^2)}dx&#038;s=4$<br \/>\n\u3002\u3002\u3002\u79ef\u5206\u6211\u5b8c\u5168\u4e0d\u4f1a\u3002\u3002\u79fb\u6b65\u8fd9\u91cc\u3002\u3002\u3002\uff09\u3002\u3002<br \/>\nhttp:\/\/blog.watashi.ws\/970\/andrew-stankevich-3-solution\/<\/p>\n<p><a href=\"http:\/\/acm.hust.edu.cn:8080\/judge\/problem\/viewSource.action?id=609922\">\u3002\u3002\u3002\u6734\u7d20\uff08\u3002\u8bbe\u7f6e\u5757\u6570\u3002\u3002\u5206\u6bb5\u9ece\u66fc\u8fd1\u4f3c\u3002\u3002\u3002<\/a><\/p>\n<h3>External link: <\/h3>\n<p><a href=\"http:\/\/acm.zju.edu.cn\/onlinejudge\/searchProblem.do?contestId=1&#038;titlefrom=0&#038;authorfrom=0&#038;sourcefrom=0&#038;query=Andrew+Stankevich%27s+Contest+%233\">http:\/\/acm.zju.edu.cn\/onlinejudge\/searchProblem.do?contestId=1&#038;titlefrom=0&#038;authorfrom=0&#038;sourcefrom=0&#038;query=Andrew+Stankevich%27s+Contest+%233<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview: \u3002\u3002#3 \u7684\u6784\u9020\u9898\u90fd\u662f\u6bd4\u8f83\u7b80\u5355\u7684\u5566\u3002\u3002\uff08C, E, H \u3002\u3002\u3002 .. \u53e6\u5916\u6709\u4e24\u9053\u5f88\u7ecf\u5178\u7684\u56fe\u8bba \uff08B, D \u3002\u3002\u3002 &#8230; \u5f53\u7136\u6700\u63a8\u8350\u7684\u8fd8\u662f A \u9898\u3002\u3002\u3002<\/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":[86],"tags":[24],"class_list":["post-386","post","type-post","status-publish","format-standard","hentry","category-andrew-stankevichs-contest","tag-24"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-6e","jetpack_sharing_enabled":false,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/386","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=386"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/386\/revisions"}],"predecessor-version":[{"id":387,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/386\/revisions\/387"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=386"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=386"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=386"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}