{"id":530,"date":"2012-10-17T12:31:54","date_gmt":"2012-10-17T04:31:54","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=530"},"modified":"2012-11-13T12:57:35","modified_gmt":"2012-11-13T04:57:35","slug":"codechef-october-challenge-2012","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/codechef-october-challenge-2012\/","title":{"rendered":"CodeChef October Challenge 2012"},"content":{"rendered":"<p>\u3002\u3002CC \u9898\u76ee\u771f\u662f\u8d8a\u6765\u8d8a\u9b3c\u755c\u4e86\u3002\u3002\u3002\u5b9e\u5728\u662f\u505a\u4e0d\u52a8\u554a\u3002\u3002\u3002<\/p>\n<p><!--more--><\/p>\n<h3>Level 1:<\/h3>\n<p>Fierce Battles<br \/>\n\u7b7e\u5230\u9898\u3002\u3002\uff08\u7565\u3002\u3002<\/p>\n<p>Little Elephant and Order<br \/>\n\u3002\u8d2a\u5fc3\u3002\u3002\uff08\u5148\u8003\u8651\u6700\u591a\u80fd\u653e\u591a\u5c11 7\uff0c\u518d\u8003\u8651\u6700\u591a\u80fd\u653e\u591a\u5c11 4 \u3002\u3002\u3002<\/p>\n<p>The New Scheme<br \/>\n\u3002\u3002\u9012\u63a8\u6570\u5217\u3002\u8fd9\u4e2a\u9898\u795e\u7206\u4e86\u3002\u8fd8\u662f\u8001\u6bb5\u6559\u6211\u7684\u5566 =w=\u3002\u3002\u3002<br \/>\n<a href=\"http:\/\/user.qzone.qq.com\/251815992\/blog\/1231945319#!app=2&#038;via=QZ.HashRefresh&#038;pos=1231945319\">http:\/\/user.qzone.qq.com\/251815992\/blog\/1231945319#!app=2&#038;via=QZ.HashRefresh&#038;pos=1231945319<\/a><br \/>\n\u8fde\u6570\u636e\u90fd\u4e00\u6837\u3002\u3002\u3002\u679c\u65ad<a href=\"http:\/\/www.codechef.com\/viewsolution\/1393284\">\u6254\u4e2a Ruby<\/a> \u79d2\u4e86\u3002\u3002<\/p>\n<p>Event Organizer<br \/>\n\u3002\u3002\u533a\u95f4\u8c03\u5ea6\u95ee\u9898\u3002\u3002<br \/>\n\u3002\u3002\u521a\u597d\u662f <a href=\"https:\/\/www.shuizilong.com\/house\/archives\/zoj-monthly-september-2012\/\">ZOJ \u6708\u8d5b\u90a3\u679a<\/a> \u7684\u7b80\u5316\u7248\u3002\u3002\u3002\u66b4\u529b DP \u4e5f\u6ca1\u4ec0\u4e48\u597d\u8bf4\u7684\u3002\u3002<\/p>\n<p>Need More Diamonds<br \/>\n\u3002\u3002\u5bf9\u4e8e\u4e00\u6b21\u8be2\u95ee\uff0c\u663e\u7136\u6211\u4eec\u53ef\u4ee5\u66b4\u529b DP\u3002\u3002<br \/>\ndp[l][r] \u8868\u793a\u53d6\u533a\u95f4 (l, r) \u4f4d\u7f6e\u7684\u671f\u671b\u5f97\u5206\u3002\u3002<br \/>\n\u7136\u540e\u8be2\u95ee\u6bd4\u8f83\u591a\u8981\u9884\u5904\u7406\uff0c\u5927\u6982\u5c31\u662f\u3002\u3002<br \/>\nC[i][j\u8868\u793a\u957f\u5ea6\u4e3a i \u65f6\uff0c\u7b2c j \u9879\u7684\u7cfb\u6570\u3002\u3002<br \/>\n\u6709\u4e86\u8fd9\u5f20\u8868\u5c31\u53ef\u4ee5 O(n) \u56de\u7b54\u6bcf\u4e2a\u8be2\u95ee\u4e86\u3002\u3002<br \/>\n\u3002\u3002\u9884\u5904\u7406\u7684\u8fc7\u7a0b\u548c\u5f00\u59cb\u7684 DP \u903b\u8f91\u4e0a\u4e5f\u662f\u7b49\u4ef7\u7684\u3002\u3002<\/p>\n<h3>Level 2:<\/h3>\n<p>Blade Master<br \/>\n\u3002\u3002\u9898\u76ee\u6bd4\u8f83\u4e0d\u597d\u603b\u7ed3\u3002\u3002\u5927\u81f4\u505a\u6cd5\u5927\u6982\u5c31\u662f\u66b4\u529b Hash \u8bb0\u5f55\u5faa\u73af\u8282\u3002\uff08\u3002\u3002 yy \u4e00\u4e0b\u5927\u6982\u53ef\u4ee5\u77e5\u9053\u4e00\u5b9a\u4f1a\u51fa\u73b0\u5faa\u73af\u8282\u3002\u3002<br \/>\n\u3002\u3002\u3002\u7136\u540e\u7528\u5c0f\u5b66\u6570\u5b66\u628a\u4f4d\u79fb\u7b97\u51fa\u6765\u5c31\u884c\u4e86\u3002\u3002\uff08\u6ce8\u610f\u4e2d\u95f4\u7684\u6a21\u62df\u8fc7\u7a0b\u8981\u4f7f\u7528\u4f4d\u8fd0\u7b97\u4f18\u5316\u3002\u3002<\/p>\n<p>Team Formation<br \/>\n\u7ed9\u5b9a\u4e00\u4e2a\u6570\u5217 ai\u3001\u4e4b\u540e\u3002\u3002\u4e00\u4e2a\u533a\u95f4\u662f\u5408\u6cd5\u533a\u95f4\u3001\u5982\u679c\u5176\u4e2d\u6700\u5927\u503c\u548c\u6700\u5c0f\u503c\u4e4b\u5dee <= C\n\u8bb0 cand[i] \u4e3a\u957f\u5ea6\u4e3a i \u7684\u5408\u6cd5\u533a\u95f4\u7684\u6570\u76ee\u3002\u3002\u6bcf\u4e2a\u8be2\u95ee M\uff0c\u56de\u7b54\u4f7f\u5f97 cand[i] <= M\u3001\u4e14 cand[i] \u5c3d\u53ef\u80fd\u5927\u7684 i\u3002\u3002\n\uff08\u3002\u82e5\u6709\u591a\u4e2a\u89e3\u6ee1\u8db3\u6761\u4ef6\uff0c\u5219\u53d6 i \u6700\u5c0f\u7684\u3002\u3002\u3002\u3002\n\u6613\u77e5 cand[i] \u5355\u8c03\u9012\u51cf\u3002\u3002\u7136\u540e\u7528\u5355\u8c03\u961f\u5217\u628a\u8fd9\u4e2a\u6570\u7ec4\u641e\u51fa\u6765\u4e8c\u5206\u67e5\u627e\u5c31\u884c\u4e86\u3002\uff08\u6c42\u51fa\u6781\u5927\u5408\u6cd5\u533a\u95f4\u6700\u540e\u7d2f\u548c\u3002\u3002\n\u3002\u3002\u65b9\u6cd5\u7c7b\u4f3c\u4e0a\u4e2a\u6708\u7684\u5355\u8c03\u961f\u5217\u9898\u3002\u3002\u3002\n\n\n\n\n<h3>Level 3:<\/h3>\n<p>Ciel and password cracking<br \/>\n\u3002\u3002\u9898\u76ee\u592a\u957f\u4e86\u3002\u6293\u4e0d\u4f4f\u91cd\u70b9\u3002\u3002GG\u3002\u3002\u3002\u3002<\/p>\n<p>Max Circumference<br \/>\n\u3002\u3002\u4e0d\u4f1a\u505a\u3002\u6c42\u4eba\u6559\u3002\u3002<\/p>\n<h3>Bonus: <\/h3>\n<p>Maximum Sub-rectangle in Matrix<br \/>\n\u3002\u3002\u8ba9\u4f60\u9009\u5b9a\u4e00\u4e9b\u884c\u548c\u4e00\u4e9b\u5217\uff0c\u7136\u540e\u6700\u5927\u5316\u6240\u6709\u8fd9\u4e9b\u5c5e\u4e8e\u4ea4\u53c9\u4f4d\u7f6e\u7684\u5f97\u5206\u3002\u3002<br \/>\n\u3002\u3002\u3002\u6211\u5c31\u5199\u4e86\u4e2a\u7b80\u5355\u7684\u8d2a\u5fc3\u9a97\u4e86\u70b9\u5206\u5c31\u7ed9\u6254\u4e00\u8fb9\u4e86\u3002<br \/>\n\u3002\uff08\u5509\u3002\u3002\u592a\u6ca1\u8ffd\u6c42\u4e86\u3002\u3002<\/p>\n<h3>External link: <\/h3>\n<p><a href=\"http:\/\/www.codechef.com\/OCT12\">http:\/\/www.codechef.com\/OCT12<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3002\u3002CC \u9898\u76ee\u771f\u662f\u8d8a\u6765\u8d8a\u9b3c\u755c\u4e86\u3002\u3002\u3002\u5b9e\u5728\u662f\u505a\u4e0d\u52a8\u554a\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":[83],"tags":[],"class_list":["post-530","post","type-post","status-publish","format-standard","hentry","category-codechef"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-8y","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/530","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=530"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/530\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}