{"id":883,"date":"2014-05-05T11:33:18","date_gmt":"2014-05-05T03:33:18","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=883"},"modified":"2014-05-05T11:35:51","modified_gmt":"2014-05-05T03:35:51","slug":"google-code-jam-2014-round-1b","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/google-code-jam-2014-round-1b\/","title":{"rendered":"Google Code Jam 2014 Round 1B"},"content":{"rendered":"<p><!--more--><\/p>\n<h2>Problem A. The Repeater<\/h2>\n<h3>Brief description: <\/h3>\n<p>\u7565\u3002\uff09<\/p>\n<h3>Analysis: <\/h3>\n<p>&#8230; \u4e2d\u4f4d\u6570\u3002<br \/>\n<a href=\"https:\/\/gist.github.com\/lychees\/3c9cc3c5ef900d6cfb48#file-a-cpp\">https:\/\/gist.github.com\/lychees\/3c9cc3c5ef900d6cfb48#file-a-cpp<\/a><\/p>\n<h2>Problem B. Rural Planning<\/h2>\n<h3>Brief description: <\/h3>\n<p>\u3002\u3002\u7ed9\u5b9a A, B, k\u3002\u3002\u3002\u95ee\u6240\u6709 a&#038;b < k \u7684\u6570\u5bf9\u6709\u591a\u5c11\u79cd\uff08\u6ee1\u8db3 0 <= a < A, 0 <= b < B\uff09\u3002\n\n\n\n<h3>Analysis: <\/h3>\n<p>\u666e\u901a\u6570\u4f4d DP\u3002\u3002\u3002\u3002<br \/>\nf(i, b0, b1, b2)\uff1a<br \/>\n    i\uff1a\u5f53\u524d\u7b2c i \u4f4d\uff0c\u4ece\u9ad8\u5f80\u4f4e\u3002<br \/>\n    b0\uff1a\u5f53\u524d a1 &#038; a2 \u7684\u7ed3\u679c\u662f\u5426\u5df2\u7ecf\u5c0f\u4e8e k \u3001\u7528\u4e8e\u8ba8\u8bba\u8f6c\u79fb\u3002<br \/>\n    b1\u3001b2\uff1a\u540e\u7eed\u5bf9 a1 \u548c a2 \u662f\u5426\u5df2\u7ecf\u653e\u677e\u4f4d\u9650\u5236\u3002<\/p>\n<p><a href=\"https:\/\/gist.github.com\/lychees\/3c9cc3c5ef900d6cfb48#file-b-cpp\">https:\/\/gist.github.com\/lychees\/3c9cc3c5ef900d6cfb48#file-b-cpp<\/a><\/p>\n<h2>Problem C. The Bored Traveling Salesman<\/h2>\n<h3>Brief description: <\/h3>\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u6709\u5411\u56fe\uff0c\u6bcf\u4e2a\u7ed3\u70b9\u4e00\u4e2a\u7f16\u53f7\uff0c\u6c42\u4e0d\u8fdb\u5165\u4efb\u4f55\u4e00\u4e2a\u7ed3\u70b9\u4e24\u6b21\uff08\u53ef\u8fd4\u56de\u4efb\u610f\u591a\u6b21\uff09\uff0c\u904d\u5386\u6240\u6709\u7ed3\u70b9\u7684\u5b57\u5178\u5e8f\u6700\u5c0f\u7684\u65b9\u6848\u3002<\/p>\n<h3>Analysis: <\/h3>\n<p>\u3002\u5c31\u662f\u6c42\u4e00\u9897\u6709\u5411\u6811\u3002\u3002\u679a\u4e3e\u6839\u3002\u3002\u8d2a\u5fc3\u6bcf\u6b21\u627e\u5f53\u524d\u751f\u6210\u6811\u96c6\u5408\u4e2d\u3002\u3002\u4e00\u4e2a\u5b57\u5178\u5e8f\u6700\u5c0f\u7684\u53ef\u8fbe\u70b9\u3002\u3002\u3002<br \/>\n\u3002\u3002\u8fd9\u6837\u53ef\u80fd\u4f1a\u5bfc\u81f4\u67d0\u4e9b\u70b9\u91cd\u590d\u8fdb\u5165\u4e24\u6b21\u3002\u3002\u3002<\/p>\n<p>\u3002\u4e8e\u662f\u6211\u4eec\u7ef4\u62a4\u4e00\u4e2a\u6808\u3002\u3002\u8868\u793a\u6839\u5230\u5f53\u524d\u7ed3\u70b9\u7684\u8def\u5f84\u3002\u3002\u53ea\u6709\u6808\u4e2d\u7ed3\u70b9\u548c\u6ca1\u6709\u8bbf\u95ee\u7ed3\u70b9\u5728\u4e00\u4e2a\u8054\u901a\u5757\u7684\u65f6\u5019\u3002\u3002<br \/>\n\u3002\u3002\u3002\u5f53\u524d\u6240\u9009\u7ed3\u70b9\u624d\u662f\u5408\u6cd5\u7684\u3002\u3002\u3002<br \/>\n\u3002\u3002\u5176\u6b21\u5982\u679c\u6808\u4e2d\u6709\u591a\u4e2a\u7ed3\u70b9\u53ef\u4ee5\u5230\u8fbe\u8be5\u7ed3\u70b9\u3002\u3002\u9000\u56de\u5230\u6700\u6df1\u7684\u4f4d\u7f6e\u3002\u3002\u3002\u4ee5\u4fdd\u8bc1\u6808\u4e2d\u7ed3\u70b9\u5c3d\u53ef\u80fd\u591a\u3002\u3002<br \/>\n\u8fd9\u6837\u505a\u603b\u662f\u53ef\u4ee5\u627e\u5230\u4e00\u4e2a\u5408\u6cd5\u8bbf\u95ee\u7ed3\u70b9\u3002\u3002\u56e0\u6b64\u5b9e\u9645\u4e0d\u9700\u8981\u679a\u4e3e\u6839\u3002\u3002\u3002\u3002<\/p>\n<p>\u5b9e\u73b0\u7684\u65f6\u5019\u7528\u4e00\u4e2a dep[] \u6570\u7ec4\u8bb0\u5f55\u5f53\u524d\u6bcf\u4e2a\u7ed3\u70b9\u7684\u6240\u5728\u6808\u4e2d\u7684\u6df1\u5ea6\u3002\u3002<br \/>\n = 0 \u8868\u793a\u672a\u8bbf\u95ee\u3002\u3002<br \/>\n = INF \u8868\u793a\u5df2\u7ecf\u5f39\u51fa\u3002<\/p>\n<p><a href=\"https:\/\/gist.github.com\/lychees\/3c9cc3c5ef900d6cfb48#file-c-cpp\">https:\/\/gist.github.com\/lychees\/3c9cc3c5ef900d6cfb48#file-c-cpp<\/a><\/p>\n<h3>External link: <\/h3>\n<p><a href=\"https:\/\/code.google.com\/codejam\/contest\/2994486\/dashboard#s=p0\">https:\/\/code.google.com\/codejam\/contest\/2994486\/dashboard#s=p0<\/a><\/p>\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":[67],"tags":[124],"class_list":["post-883","post","type-post","status-publish","format-standard","hentry","category-google-code-jam","tag-124"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-ef","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/883","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=883"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/883\/revisions"}],"predecessor-version":[{"id":884,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/883\/revisions\/884"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=883"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=883"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=883"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}