{"id":717,"date":"2013-04-11T06:19:46","date_gmt":"2013-04-10T22:19:46","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=717"},"modified":"2013-04-11T06:34:09","modified_gmt":"2013-04-10T22:34:09","slug":"codeforces-round-178","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/codeforces-round-178\/","title":{"rendered":"Codeforces Round #178"},"content":{"rendered":"

Problem E. Shaass the Great<\/h2>\n

Brief description: <\/h3>\n

\u3002\u3002\u3002\u7ed9\u5b9a\u4e00\u9897\u8fb9\u6743\u6811\u3002\u3002\u4f60\u53ef\u4ee5\u79fb\u52a8\u4efb\u610f\u4e00\u6761\u8fb9\u3002\u3002\u53ea\u8981\u65b0\u56fe\u4ecd\u7136\u662f\u4e00\u9897\u6811\u3002\u3002
\n\u3002\u3002\u3002\u6700\u5c0f\u5316\u3002\u6240\u6709\u70b9\u5bf9\u4e4b\u95f4\u7684\u8ddd\u79bb\u7684\u548c\u3002
\n(\u3002\u3002n = 5000\u3002\u3002\u3002)
\n<\/p>\n

Analysis: <\/h3>\n

\u3002\u3002\u3002\u679a\u4e3e\u6bcf\u4e00\u6761\u8981\u79fb\u52a8\u7684\u8fb9\u3002\u3002\u90a3\u4e48\u663e\u7136\u8981\u63a5\u5230\u8fd9\u4e24\u68f5\u5b50\u6811\u7684\u91cd\u5fc3\uff08\u6240\u6709\u7ed3\u70b9\u5230\u8be5\u70b9\u7684\u8ddd\u79bb\u548c\u6700\u5c0f\uff09\u4e0a\u53bb\u3002
\nhttp:\/\/codeforces.com\/contest\/294\/submission\/3501355<\/a><\/p>\n

\uff08\u3002\u3002\u3002\u6bd4\u8d5b\u65f6\u8bfb\u5b8c\u9898\u76ee\u5c31\u60f3\u5230\u4e86\u91cd\u5fc3\u3002\u3002\u7136\u540e\u4e00\u76f4\u8bd5\u56fe\u5f80\u5e76\u67e5\u96c6\u65b9\u9762\u9760\u3002\u3002\u5c45\u7136\u8ba4\u4e3a\u662f\u4e0d\u53ef\u505a\u9898\u6211\u662f\u591a\u5f31\u554a\u3002\u3002\u3002
\n\u3002\u3002\u3002\u867d\u7136\u73b0\u5728\u4e5f\u6ca1\u641e\u51fa O(nlogn) \u7b97\u6cd5\u3002\u3002\u3002sad\u3002\u3002\u3002\uff09<\/p>\n

Problem D. Shaass and Painter Robot<\/h2>\n

Brief description: <\/h3>\n

..\u5728\u4e00\u4e2a n*m \u7684\u683c\u70b9\u4e0a\u3002\u3002\u6709\u4e00\u4e2a\u5728\u521d\u59cb\u4f4d\u7f6e (x, y)\u3002\u3002\u53ea\u4f1a\u659c\u7740\u8d70\u3002\u3002\u649e\u5899\u4ee5\u540e\u9075\u4ece\u53cd\u5c04\u5b9a\u5f8b\u7684\u3002\u3002\u4f1a\u628a\u6240\u6709\u9014\u5f84\u7684\u683c\u5b50\u67d3\u6210\u9ed1\u8272\u7684\u673a\u5668\u4eba\u3002\u3002\u3002
\n\u3002\u3002\u3002\u95ee\u662f\u5426\u80fd\u5c06\u683c\u70b9\u67d3\u6210\u68cb\u76d8\u56fe\u6848\u3002\u3002\u5982\u679c\u53ef\u4ee5\u3002\u95ee\u81f3\u5c11\u9700\u8981\u8d70\u591a\u5c11\u6b65\u3002\u3002\u3002
\n\uff08..n,m = 10^5, \u673a\u5668\u4eba\u521d\u59cb\u4f4d\u7f6e\u4e00\u5b9a\u662f\u9ed1\u8272\u683c\u5b50\u3002\u3002\u4e14\u5728\u8fb9\u754c\u4e0a\u3002\u3002\uff09<\/p>\n

Analysis: <\/h3>\n

… \u56e0\u4e3a\u51fa\u53d1\u70b9\u662f\u5728\u8fb9\u754c\u4e0a\u3002\uff08\u5982\u679c\u4e0d\u662f\u53ef\u4ee5\u8ba9\u673a\u5668\u4eba\u5148\u9000\u51e0\u6b65\u3002\u3002\u8f6c\u5316\u6210\u5728\u8fb9\u754c\u4e0a\u7684\u60c5\u51b5\u3002\u3002\uff09\u3002\u3002\u5bb9\u6613\u60f3\u5230\u4e00\u4e2a\u7ed3\u8bba\u3002\u3002\u3002
\n\u3002\u3002\u53ea\u8981\u6240\u6709\u8fb9\u754c\u683c\u5b50\u90fd\u88ab\u67d3\u8272\u3002\u3002\u90a3\u4e48\u6240\u6709\u683c\u5b50\u5c31\u5df2\u7ecf\u88ab\u67d3\u8272\u3002\u3002\u3002<\/p>\n

http:\/\/codeforces.com\/contest\/294\/submission\/3500749<\/a>
\n\u3002\u3002\u5fc5\u8981\u6027\u663e\u7136\u3002\u3002\u5145\u5206\u6027\u53ef\u4ee5\u5bf9\u683c\u5b50\u5f52\u7eb3\u5f97\u5230\u3002\u3002\u6709\u89e3\u7684\u60c5\u51b5\u4e0b\u3002\u6bcf\u4e2a\u8fb9\u754c\u683c\u70b9\u81f3\u591a\u8fdb\u51fa\u4e24\u6b21\u3002\u3002\u4e8e\u662f\u5c31\u53ef\u4ee5\u5f53\u6210 O(n+m) \u7684\u5927\u6a21\u62df\u6765\u5199\u4e86\u3002\u3002\u3002<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014
\n\u5f53\u7136\u548c DukeOnLargeChessBoard<\/a> \u76f8\u6bd4\u8fd9\u4e2a\u5b9e\u5728\u662f\u5f31\u7206\u4e86\u3002\u3002\uff08\u8fd9\u9898\u6bd4\u8d5b\u65f6\u6211\u80fd\u60f3\u51fa\u6765\uff1f\uff1f<\/p>\n

Problem C. Shaass and Painter Robot<\/h2>\n

Brief description: <\/h3>\n

\u3002\u3002\u7ed9\u5b9a\u4e00\u4e2a 0\/1 \u4e32\u3002\u3002\u8868\u793a\u706f\u6ce1\u3002\u3002\u3002\u5982\u679c\u4e00\u4e2a\u706f\u6ce1\u7684\u76f8\u90bb\u4f4d\u7f6e\u6709\u4e00\u4e2a\u4eae\u7740\u7684\u90a3\u4e48\u53ef\u4ee5\u70b9\u4eae\u5b83\u3002\u3002\u3002
\n\u3002\u3002\u8ba1\u6570\u70b9\u4eae\u6240\u6709\u706f\u7684\u65b9\u6848\u6570\u3002\u3002\u3002<\/p>\n

Analysis: <\/h3>\n

\u3002\u3002\u3002\u552f\u4e00\u5728\u6bd4\u8d5b\u65f6\u52a8\u624b\u5199\u7684\u9898\u76ee\u3002\u3002\u5f88\u5bb9\u6613\u60f3\u5230\u5206\u89e3\u6210\u3002\u30020000\/1111\/000 … 0\/1111\/0000 \u3002\u3002\u3002\u3002 \u8fd9\u6837\u7684 0\/1 \u6bb5\u3002\u3002
\n\u3002\u3002\u3002\u90a3\u4e48\u9664\u4e24\u4fa7\u4ee5\u5916 0000 \u6bcf\u4e00\u6b65\u662f\u8981\u8003\u8651\u4ece\u5de6\u8fb9\u8fdb\u53d1\u8fd8\u662f\u4ece\u53f3\u8fb9\u8fdb\u53d1\u7684\u3002\u3002\u3002\u6b64\u5904\u7684\u56e0\u5b50\u662f \u3002\u30022^(s-1)\uff0cs \u8868\u793a\u957f\u5ea6\u3002\u3002\u3002
\n\u3002\u3002\u9664\u6b64\u4e4b\u5916\u8fd8\u8981\u4e58\u4ee5\u4e00\u4e2a\u603b\u7684\u591a\u9879\u5f0f\u7cfb\u6570\u3002\u3002\u3002<\/p>\n

\u3002\u3002\u6bd4\u8d5b\u65f6\u5199\u4e86\u4e00\u4e2a\u5de8\u751f\u7684 Ocaml<\/a>\u3002\u3002 \u800c\u4e14\u5929\u771f\u7684\u8ba4\u4e3a\u51fd\u6570\u5f0f\u8bed\u8a00\u4f1a\u81ea\u52a8\u8bb0\u5fc6 comb \u8fd9\u79cd\u9012\u5f52\u51fd\u6570\u3002\u3002\u3002\u7ed3\u679c\u770b\u4e86 Professor \u7684\u7801<\/a>\u53d1\u73b0\u4ed6\u662f\u9884\u5904\u7406\u4e8c\u9879\u5f0f\u7cfb\u6570\u7684\u3002\u3002\u3002-.-\u3002\u3002\uff08\u90a3\u6211\u4e3a\u4ec0\u4e48\u8981\u7528 Ocaml \u554a\u3002\u3002\u3002<\/p>\n

http:\/\/codeforces.com\/contest\/294\/submission\/3485735<\/a>
\n\u9ad8\u4e0b\u7acb\u5224\u554a\uff01\u3002\u3002<\/p>\n

Postscript :<\/h2>\n

\u3002\u3002\u3002blog \u8fd9\u4e2a\u6708\u4e00\u5b9a\u8981\u642c\u5230 Linode \u4e0b\u53bb\u4e86\u3002\u3002\u3002\uff08\u3002\u3002\u5176\u5b9e\u4e0a\u4e0a\u4e2a\u6708\u5c31\u8981\u642c\u4e86\u3002\u3002\u4f46\u662f\u6211\u5404\u79cd\u4e0d\u4f1a\u3002\u3002\u3002\u62d6\u5230\u73b0\u5728\u3002\u3002\u6bcf\u62d6\u4e00\u4e2a\u6708\u6211\u90fd\u8981\u635f\u5931 9$ \u8981\u4e0d\u8981\u8fd9\u6837\u3002\u3002\u3002\u3002\u3002\u3002
\n\u3002\u3002\u3002\u89e3\u9898\u62a5\u544a\u90e8\u5206\u4e00\u76f4\u60f3\u642c\u8fd0\u5230 Github \u4e0a\u53bb\u3002\u3002\u7136\u540e markdone\u3002\u3002\u3002\u3002\u7279\u522b\u662f TC\/CF\/CC \u8fd9\u4e9b\u5e38\u89c4\u8d5b\u3002\u3002\u3002\u3002\u4f46\u662f\u4e00\u76f4\u8fd8\u6ca1\u5f04\u59a5\u3002\u3002\u3002\u3002\u4e0d\u77e5\u9053\u8981\u5751\u591a\u4e45\u3002\u3002\u3002
\n\u3002\u3002\uff08\u3002\u3002\u6240\u4ee5\u73b0\u5728\u627e TC\/CF \u89e3\u9898\u62a5\u544a\u8bf7\u53bb\u770b AFAIK<\/a> \u5427\u3002\u3002\u3002\u6bd4\u6211\u8fd9\u8fb9\u73b0\u5728\u8981\u826f\u5fc3\u591a\u4e86\u3002\u3002\u6211\u8fd9\u8fb9\u6682\u65f6\u5c31\u628a LYP \u6ca1\u5199\u7684\u51e0\u7bc7\u7ed9\u8865\u4e0a\u597d\u4e86\u3001\u3001\u3002\u3002\u3002<\/p>\n

\u4ee5\u4e0a\u3002\u3002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Problem E. Shaass the Great Brief description: \u3002\u3002\u3002\u7ed9\u5b9a\u4e00\u9897\u8fb9\u6743\u6811\u3002\u3002\u4f60\u53ef\u4ee5\u79fb\u52a8\u4efb\u610f\u4e00\u6761\u8fb9\u3002\u3002\u53ea\u8981\u65b0\u56fe\u4ecd\u7136\u662f\u4e00\u9897\u6811\u3002\u3002 \u3002\u3002\u3002\u6700\u5c0f\u5316\u3002\u6240\u6709\u70b9\u5bf9\u4e4b\u95f4\u7684\u8ddd\u79bb\u7684\u548c\u3002 (\u3002\u3002n = 5000\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":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[1],"tags":[],"class_list":["post-717","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-bz","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/717","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=717"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/717\/revisions"}],"predecessor-version":[{"id":718,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/717\/revisions\/718"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}