{"id":189,"date":"2019-08-20T21:00:27","date_gmt":"2019-08-20T13:00:27","guid":{"rendered":"https:\/\/wwwwodddd.com\/?p=189"},"modified":"2020-02-13T01:48:19","modified_gmt":"2020-02-12T17:48:19","slug":"bio-2018","status":"publish","type":"post","link":"https:\/\/wwwwodddd.com\/wordpress\/bio-2018\/","title":{"rendered":"British Informatics Olympiad 2018"},"content":{"rendered":"<p><!--more--><\/p>\n<h1>British Informatics Olympiad 2018<\/h1>\n<p>https:\/\/www.olympiad.org.uk\/2018\/index.html<\/p>\n<h1>Round One<\/h1>\n<p>BIO\u7684\u4e00\u8bd5\uff0c\u662f\u7b14\u8bd5\u548c\u673a\u8bd5\u7ed3\u5408\u8d77\u6765\u3002<br \/>\n\u9898\u76ee<br \/>\nhttps:\/\/www.olympiad.org.uk\/papers\/2018\/bio\/bio18-exam.pdf<\/p>\n<p>\u7b54\u6848<br \/>\nhttps:\/\/www.olympiad.org.uk\/papers\/2018\/bio\/bio18-marks.pdf<\/p>\n<h1>Round Two<\/h1>\n<p>\u56db\u9053\u4e0a\u673a\u9898<\/p>\n<h2>Byway<\/h2>\n<p>https:\/\/www.olympiad.org.uk\/papers\/2018\/final\/Byway.pdf<br \/>\n\u8f93\u5165\u4e00\u4e2a\u65e0\u5411\u56fe\uff0c\u53ef\u4ee5\u8ba9\u4e00\u6761\u8fb9\u7684\u8ddd\u79bb\u53d8\u4e3a\u539f\u672c\u7684\u4e00\u534a\uff0c\u95ee1\u5230v\u7684\u6700\u77ed\u8def\u3002<\/p>\n<p>\u89e3\u6cd5\uff1a\u5206\u5c42\u56fe\u6700\u77ed\u8def<\/p>\n<h2>Cables<\/h2>\n<p>https:\/\/olympiad.org.uk\/papers\/2018\/final\/Cables.pdf<br \/>\n\u8f93\u5165$s \\times l$\u4e2a\u70b9\uff0c\u6ca1\u6709\u4e09\u70b9\u5171\u7ebf\u3002<br \/>\n\u628a\u8fd9\u4e9b\u70b9\u5206\u6210$l$\u4e2a\u96c6\u5408\uff0c\u6bcf\u4e2a\u96c6\u5408\u91cc\u6709$s$\u4e2a\u70b9\uff0c\u7136\u540e\u628a\u6bcf\u4e2a\u96c6\u5408\u5185\u7684\u70b9\u8fde\u6210\u4e00\u4e2a\u73af\u3002<br \/>\n\u8981\u6c42\u6240\u6709\u7684\u7ebf\u6bb5\u53ea\u80fd\u5728\u7aef\u70b9\u5904\u76f8\u4ea4\u3002\u6ce8\u610f\u5e76\u4e0d\u9700\u8981\u50cf\u9898\u76ee\u4e2d\u4e00\u6837\uff0c\u5d4c\u5957\u8d77\u6765\u3002<\/p>\n<p>\u89e3\u6cd5\uff1a<br \/>\n\u628a\u6240\u6709\u70b9\u6309\u7167$x$\u6392\u5e8f\uff0c\u5982\u679c$x$\u76f8\u540c\u6309\u7167$y$\u6392\u5e8f\uff0c\u7136\u540e\u6bcf$s$\u4e2a\u5206\u4e00\u7ec4\u3002<br \/>\n\u63a5\u4e0b\u6765\u8981\u628a\u4e00\u7ec4\u4e2d\u6240\u6709\u70b9\u8fde\u8d77\u6765\uff0c\u4e0d\u81ea\u4ea4\u3002<br \/>\n\u4e00\u4e2a\u6bd4\u8f83\u7b80\u5355\u7684\u505a\u6cd5\u662f\u6781\u89d2\u6392\u5e8f\u3002<\/p>\n<h2>Detente<\/h2>\n<p>https:\/\/www.olympiad.org.uk\/papers\/2018\/final\/Detente.pdf<br \/>\n\u8f93\u5165\u5e73\u9762\u4e0a$n(n &lt; 8192)$\u4e2a\u70b9\uff0c\u6bcf\u4e2a\u70b9\u8981\u67d3\u6210A\u8272\u6216\u8005B\u8272\uff0c\u8981\u6c42\u67d3\u8272\u4e4b\u540e\uff0c\u6bcf\u884c\u6bcf\u5217A\u548cB\u7684\u4e2a\u6570\u81f3\u591a\u5dee$1$\uff08\u4e2a\u6570\u5dee\u7684\u7edd\u5bf9\u503c\u5c0f\u4e8e\u7b49\u4e8e$1$\uff09<\/p>\n<p>\u89e3\u6cd5\uff1a<br \/>\n\u6bcf\u884c\u6bcf\u5217\u5efa\u4e00\u4e2a\u70b9\uff0c\u8fd9\u6837\u5bf9\u4e8e\u539f\u56fe\u7684\u4e00\u4e2a\u70b9\uff0c\u76f8\u5f53\u4e8e\u8fd9\u4e2a\u65b0\u56fe\u4e2d\u7684\u4e00\u6761\u8fb9\uff0c\u8fd9\u4e2a\u56fe\u662f\u4e8c\u5206\u56fe\uff0c\u7136\u540e\u8981\u7ed9\u6bcf\u6761\u8fb9\u4e00\u4e2a\u989c\u8272\u3002<br \/>\n\u5982\u679c\u65b0\u56fe\u4e2d\u6709\u4e00\u4e2a\u73af\uff0c\u5f53\u7136\u8fd9\u4e2a\u73af\u957f\u5ea6\u4e3a\u5076\u6570\uff0c\u53ea\u9700\u8981\u628a\u8fd9\u4e2a\u73af\u4e0a\u7684\u8fb9\u4ea4\u66ff\u67d3\u4e3aA\u548cB\uff0c\u5c31\u53ef\u4ee5\u4e86\u3002<br \/>\n\u8fd9\u6837\u53ef\u4ee5\u5220\u6389\u539f\u56fe\u4e2d\u6240\u6709\u7684\u73af\uff0c\u539f\u56fe\u4f1a\u53d8\u4e3a\u4e00\u4e2a\u68ee\u6797\u3002<br \/>\n\u5bf9\u4e8e\u4e00\u68f5\u6811\u6765\u8bf4\uff0c\u53ea\u8981\u968f\u4fbf\u67d3\u4e00\u4e0b\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n<h2>Show \/ Bonus<\/h2>\n<p>https:\/\/www.olympiad.org.uk\/papers\/2018\/final\/Show.pdf<br \/>\nhttps:\/\/www.olympiad.org.uk\/papers\/2018\/final\/Bonus.pdf<br \/>\n\u8f93\u5165\u4e00\u4e2a\u7ade\u8d5b\u56fe\uff0c\u6c42\u4e00\u4e2a \u54c8\u5bc6\u5c14\u987f\u8def \/ \u54c8\u5bc6\u5c14\u987f\u56de\u8def<\/p>\n<p>\u89e3\u6cd5\uff1a<br \/>\nhttps:\/\/en.wikipedia.org\/wiki\/Tournament_(graph_theory)<br \/>\nhttp:\/\/www.math.toronto.edu\/gscott\/sept20_2016.pdf<br \/>\n\u5bf9\u4e8e\u54c8\u5bc6\u5c14\u987f\u8def\uff0c\u53ef\u4ee5\u76f4\u63a5\u7528\u6570\u5b66\u5f52\u7eb3\u6cd5\u8bc1\u660e\u3002<br \/>\n\u53ef\u4ee5\u53c2\u8003\u7b2c\u4e8c\u4e2apdf\u3002<\/p>\n<p>https:\/\/math.stackexchange.com\/questions\/461818\/hamiltonian-cycle-in-tournament<br \/>\n\u5bf9\u4e8e\u54c8\u5bc6\u5c14\u987f\u56de\u8def\uff0c\u6709\u89e3\u7684\u6761\u4ef6\u662f\u6240\u6709\u70b9\u5728\u4e00\u4e2a\u5f3a\u8fde\u901a\u5206\u91cf\u91cc\u3002<br \/>\n\u5220\u6389\u4efb\u610f\u4e00\u4e2a\u70b9\u4e4b\u540e\uff0c\u53ef\u4ee5\u7701\u4e0b\u82e5\u5e72\u7684\u5f3a\u8fde\u901a\u5206\u91cf\uff0c\u6bcf\u4e2a\u5f3a\u8fde\u901a\u5206\u91cf\u6c42\u4e00\u4e2a\u54c8\u5bc6\u5c14\u987f\u56de\u8def\u3002<br \/>\n\u52a0\u5165\u8fd9\u4e2a\u70b9\u4e4b\u540e\uff0c\u53ef\u4ee5\u628a\u6240\u6709\u54c8\u5bc6\u5c14\u987f\u56de\u8def\u4e32\u5728\u4e00\u8d77\u3002<\/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":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-189","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/wwwwodddd.com\/wordpress\/wp-json\/wp\/v2\/posts\/189","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wwwwodddd.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wwwwodddd.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wwwwodddd.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wwwwodddd.com\/wordpress\/wp-json\/wp\/v2\/comments?post=189"}],"version-history":[{"count":0,"href":"https:\/\/wwwwodddd.com\/wordpress\/wp-json\/wp\/v2\/posts\/189\/revisions"}],"wp:attachment":[{"href":"https:\/\/wwwwodddd.com\/wordpress\/wp-json\/wp\/v2\/media?parent=189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wwwwodddd.com\/wordpress\/wp-json\/wp\/v2\/categories?post=189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wwwwodddd.com\/wordpress\/wp-json\/wp\/v2\/tags?post=189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}