{"id":465,"date":"2012-09-09T03:09:09","date_gmt":"2012-09-08T19:09:09","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=465"},"modified":"2014-10-15T12:16:51","modified_gmt":"2014-10-15T04:16:51","slug":"poj-3680-intervals","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/poj-3680-intervals\/","title":{"rendered":"POJ 3680. Intervals"},"content":{"rendered":"<h3>Brief description: <\/h3>\n<p>\u7ed9\u5b9a N \u4e2a\u5e26\u6743\u5f00\u533a\u95f4\uff0c(ai, bi, wi) .. .<br \/>\n\u73b0\u5728\u8981\u4f60\u6311\u9009\u51fa\u4e00\u4e9b\u533a\u95f4\u4f7f\u5f97\u603b\u6743\u503c\u6700\u5927\uff0c\u5e76\u4e14\u6ee1\u8db3\u6570\u8f74\u4e0a\u4efb\u610f\u4e00\u4e2a\u70b9\u88ab\u8986\u76d6\u7684\u6b21\u6570\u4e0d\u8d85\u8fc7 k\u3002<br \/>\n( 1 <= k <= N <= 200, 1 <= ai < bi <= 100, 000, 1 <= wi <= 100, 000 .. .)\n\n<!--more--><\/p>\n<h3>Analysis: <\/h3>\n<p>\u6700\u5927\u8d39\u7528\u6d41\u3002<\/p>\n<p>\u6784\u56fe\uff1a<\/p>\n<p>1. (\u7ecf\u5178\u6784\u56fe\u65b9\u6848<br \/>\n\u5148\u5c06\u533a\u95f4\u7aef\u70b9\u79bb\u6563\u5316\u3002\u4e4b\u540e\u5bf9\u6bcf\u4e2a\u533a\u95f4\uff0c\u52a0\u8fb9 (li, ri, 1, wi) ..<br \/>\n\u518d\u6309\u987a\u5e8f\u5bf9\u6bcf\u4e2a\u7aef\u70b9\u52a0\u8fb9 (i, i+1, k, 0) ..<\/p>\n<p>2. (\u975e\u4e3b\u6d41\u795e\u7287\u6784\u56fe\u65b9\u6848\u3002\u3002<br \/>\n\u4ee5\u533a\u95f4\u4e3a\u70b9\uff0c\u76f4\u63a5\u62c6\u6210\u52a0\u8fb9 (i, i&#8217;, 1, wi) .. . ( \u4e0d\u9700\u8981\u79bb\u6563\u5316\u3002\u3002<br \/>\n\u5bf9\u4e8e\u6bcf\u4e2a\u533a\u95f4\uff0c\u5206\u522b\u52a0\u8fb9 (s, i, 1, 0) \u548c (i&#8217;, t, 1, 0) &#8230;<br \/>\n\u4e4b\u540e\u5bf9\u533a\u95f4\u6392\u5e8f\u3002\u3002\u5bf9\u4e8e\u4efb\u610f\u4e24\u4e2a\u533a\u95f4 i, j\uff0c( i < j ) \u5982\u679c\u6ca1\u6709\u4ea4\u96c6\uff0c\u5219\u52a0\u8fb9 (i', j, 1, 0)..\n\u7136\u540e\u6c42\u6700\u5927\u6d41\u4e0d\u8d85\u8fc7 k \u7684\u6700\u5927\u8d39\u7528\u6d41\u3002\u3002\u3002\n\n<a href=\"https:\/\/gist.github.com\/lychees\/e0f53295cd9128b2cc62\">\u3002\u3002\u795e\u7287\u6784\u56fe\u6cd5\u3002\u3002\uff08\u3002\u30021000 ms+\u3002\u3002<\/a><\/p>\n<h3>External link: <\/h3>\n<p><a href=\"http:\/\/poj.org\/problem?id=3680\">http:\/\/poj.org\/problem?id=3680<\/a><br \/>\n<a href=\"http:\/\/hi.baidu.com\/graphis\/item\/b18de4a85dccd2e414329b2c\">http:\/\/hi.baidu.com\/graphis\/item\/b18de4a85dccd2e414329b2c<\/a><br \/>\n<a href=\"http:\/\/blog.sina.com.cn\/s\/blog_7c09163301011u67.html\">http:\/\/blog.sina.com.cn\/s\/blog_7c09163301011u67.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Brief description: \u7ed9\u5b9a N \u4e2a\u5e26\u6743\u5f00\u533a\u95f4\uff0c(ai, bi, wi) .. . \u73b0\u5728\u8981\u4f60\u6311\u9009\u51fa\u4e00\u4e9b\u533a\u95f4\u4f7f\u5f97\u603b\u6743\u503c\u6700\u5927\uff0c\u5e76\u4e14\u6ee1\u8db3\u6570\u8f74\u4e0a\u4efb\u610f\u4e00\u4e2a\u70b9\u88ab\u8986\u76d6\u7684\u6b21\u6570\u4e0d\u8d85\u8fc7 k\u3002 ( 1<\/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-465","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-7v","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/465","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=465"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/465\/revisions"}],"predecessor-version":[{"id":466,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/465\/revisions\/466"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=465"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}