{"id":483,"date":"2012-09-19T19:51:55","date_gmt":"2012-09-19T11:51:55","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=483"},"modified":"2012-09-19T19:51:55","modified_gmt":"2012-09-19T11:51:55","slug":"codeforces-round-138","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/codeforces-round-138\/","title":{"rendered":"Codeforces Round #138"},"content":{"rendered":"<p>\u8fd9\u573a D\u3001E \u90fd\u6ca1\u4eba\u80fd\u51fa\u3002\u3002\u3002<br \/>\nD:\u3002\u3002\u6b27\u51e0\u91cc\u5f97\u7a7a\u95f4\u4e2d\u7ed9\u5b9a\u4e00\u4e2a\u4e00\u822c\u591a\u8fb9\u5f62\uff0c\u652f\u6301\u4e24\u79cd\u79fb\u52a8\u65b9\u5f0f\u3002\uff08\u6cbf\u7740\u591a\u8fb9\u5f62\u7684\u8fb9\u6216\u8005\u5782\u76f4\u964d\u843d\u3002\u3002\u95ee\u591a\u8fb9\u5f62\u5892\u4e24\u70b9\u4e4b\u95f4\u7684\u6700\u77ed\u8ddd\u79bb(\u3002\u3002 E: \u7ed9\u5b9a\u4e00\u526f\u3002\u8fb9\u70b9\u8fde\u901a\u5ea6\u5747 > 1 \u7684\u5e73\u9762\u56fe\u3002\u6bcf\u6b21\u8be2\u95ee\u4e00\u4e2a\u5708\u3002\u3002\u95ee\u6709\u54ea\u4e9b\u70b9\u5728\u8fd9\u4e2a\u5708\u5185\u90e8\u3002\u3002<\/p>\n<p><!--more--><\/p>\n<h3>Brief description: <\/h3>\n<p>A. Bracket Sequence<br \/>\n\u7ed9\u5b9a\u4e00\u7ec4\u7531 &#8220;()[]&#8221; \u7ec4\u6210\u7684\u62ec\u53f7\u5e8f\u5217\uff0c\u6c42\u542b &#8216;[&#8216; \u6700\u591a\u7684\u4e00\u4e2a\u5408\u6cd5\u5b50\u5e8f\u5217\u3002<br \/>\n\uff08\u7528\u6808\u626b\u63cf\u4e00\u904d\u5f97\u5230\u4e0e\u6bcf\u4e2a\u53f3\u62ec\u53f7\u552f\u4e00\u5339\u914d\u7684\u5de6\u62ec\u53f7\u4f4d\u7f6e\uff0c\u7528\u8fd9\u4e2a\u4fe1\u606f\u505a\u52a8\u6001\u89c4\u5212<\/p>\n<p>B. Two Strings<br \/>\n\u7ed9\u5b9a\u4e32 s \u548c\u4e32 t\u3002\u3002\u95ee\u662f\u5426 s \u4e32\u7684\u6bcf\u4e00\u4e2a\u4f4d\u7f6e\u7684\u5b57\u7b26\u3002\u3002<br \/>\n\u90fd\u53ef\u4ee5\u5728\u4e00\u4e2a\u5339\u914d t \u4e32\u7684\u5b50\u5e8f\u5217\u4e4b\u4e2d\u3002<br \/>\n\uff08\u5bf9 s \u4e32\u7684\u6bcf\u4e2a\u4f4d\u7f6e si\uff0c\u8bb0\u5f55\u5176\u5de6\u8d77\u548c\u53f3\u8d77\u5206\u522b\u80fd\u5728 t \u4e32\u4e2d\u5339\u914d\u5230\u7684\u6700\u8fdc\u4f4d\u7f6e\uff0c\u8981\u4f7f\u5982\u679c\u8be5\u4f4d\u7f6e\u5408\u6cd5\uff0c<br \/>\n\u5219\u5fc5\u987b\u6709\u8fd9\u4e2a\u533a\u95f4\u542b\u6709\u4ea4\u96c6\uff0c\u4e4b\u540e\u5728\u770b\u5728 t \u4e32\u4e2d\u8fd9\u4e2a\u4ea4\u96c6\u6240\u5728\u533a\u95f4\u4e2d\u662f\u5426\u5305\u542b\u6709 si<\/p>\n<p>C. Partial Sums<br \/>\n\u7ecf\u5178\u95ee\u9898\uff0c\u6c42 k \u9636 Partial Sums\u3002<br \/>\n\uff08\u7ec4\u5408\u6570\u3002\u3002\u3002<\/p>\n<h3>External link: <\/h3>\n<p><a href=\"http:\/\/www.codeforces.com\/contest\/223\">http:\/\/www.codeforces.com\/contest\/223<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u573a D\u3001E \u90fd\u6ca1\u4eba\u80fd\u51fa\u3002\u3002\u3002 D:\u3002\u3002\u6b27\u51e0\u91cc\u5f97\u7a7a\u95f4\u4e2d\u7ed9\u5b9a\u4e00\u4e2a\u4e00\u822c\u591a\u8fb9\u5f62\uff0c\u652f\u6301\u4e24\u79cd\u79fb\u52a8\u65b9\u5f0f\u3002\uff08\u6cbf\u7740\u591a\u8fb9\u5f62\u7684\u8fb9\u6216\u8005\u5782\u76f4\u964d\u843d\u3002\u3002\u95ee\u591a\u8fb9\u5f62\u5892\u4e24\u70b9\u4e4b\u95f4\u7684\u6700\u77ed\u8ddd\u79bb(\u3002\u3002 E: \u7ed9\u5b9a\u4e00\u526f\u3002\u8fb9\u70b9\u8fde\u901a\u5ea6\u5747 > 1 \u7684\u5e73\u9762\u56fe\u3002\u6bcf\u6b21\u8be2\u95ee\u4e00\u4e2a\u5708\u3002\u3002\u95ee\u6709\u54ea\u4e9b\u70b9\u5728\u8fd9\u4e2a\u5708\u5185\u90e8\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":[18],"tags":[],"class_list":["post-483","post","type-post","status-publish","format-standard","hentry","category-codeforces"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-7N","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/483","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=483"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/483\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=483"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=483"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=483"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}