{"id":424,"date":"2012-08-22T22:25:56","date_gmt":"2012-08-22T14:25:56","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=424"},"modified":"2012-08-24T10:37:12","modified_gmt":"2012-08-24T02:37:12","slug":"codeforces-round-134","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/codeforces-round-134\/","title":{"rendered":"Codeforces Round #134"},"content":{"rendered":"

\uff08A \u7565\u3002B \u7ed9\u5b9a\u4e00\u7ec4\u4e00\u79cd\u7c7b \u6590\u6ce2\u90a3\u5951\u6570\u7684\u6784\u9020\u65b9\u5f0f\uff0c\u6bcf\u4e00\u6b65\u53ef\u4ee5\u9009 F[n] = F[n-1] + F[n-2] \u6216\u8005 F[n] = k F[n-1] + F[n-2]\u3002\u3002\u3002\u8981\u6c42\u901a\u8fc7 n \u6b21\u6784\u9020\u5f97\u5230\u6570 r\uff0c\u8981\u6c42\u91c7\u53d6\u7b2c\u4e8c\u79cd\u7b56\u7565\u6700\u5c11\u3002\u3002\u3002\u3002\uff08D\uff1a \u7ed9\u5b9a N \u4e2a\u6570\u3002\u3002\u95ee\u4ece\u4e2d\u53ef\u4ee5\u6709\u591a\u5c11\u79cd\u96c6\u5408\u53ef\u4ee5\u4f7f\u5f97\u96c6\u5408\u4e2d\u7684\u6570\u53ef\u4ee5 % M = 0\u3002\u3002\uff08\u9650\u5236\u65b9\u7a0b\u7ec4\u7684\u7cfb\u6570\u53ea\u53ef\u4ee5\u53d6 {-1, 1}\u3002\u3002\uff08E: Rope \uff1f\u3002Splay \uff1f\u3002\u3002\u3002\u3002
\n<\/p>\n

Brief description: <\/h3>\n

Problem D:
\n\u7ed9\u5b9a n \u4e2a\u6570\uff0c\u95ee\u6709\u591a\u5c11\u4e2a\u5b50\u96c6\uff0c\u4f7f\u5f97\u4ece\u8fd9 n \u4e2a\u6570\u4e2d\u53d6\u51fa\u8fd9\u4e9b\u6570\u4e4b\u540e\uff0c\u4f59\u4e0b\u7684\u6570\u7ec4\u6210\u7684 +-1 \u7ec4\u5408\u65e0\u6cd5\u6a21 P \u4e3a 0\u3002
\n( n <= 10000, p <= 120 ... )\n\n\n\n

Analysis: <\/h3>\n

.. \u66b4\u641c\u3002\u3002\u3002\u5b9e\u9645\u4e0a\u8fd9\u4e2a\u4e0d\u662f\u4efb\u4f55\u7ecf\u5178\u6a21\u578b\u3002\u3002\u3002\u3002
\n\u7a81\u7834\u53e3\u5728\u4e8e\u6a21\u6570\u5f88\u5c0f\u3002\u3002\u3002\u9996\u5148\u8003\u8651\u5c06\u6a21 P \u76f8\u540c\uff08\u4e92\u4e3a\u76f8\u53cd\u7684\u4e5f\u89c6\u4e3a\u76f8\u540c\uff09\u7684\u6570\u5206\u7ec4\u3002\u3002
\n\u90a3\u4e48\u3002\u3002\u5982\u679c\u6240\u6709\u7684\u6570\u90fd\u9009\u80af\u5b9a\u662f\u4e00\u79cd\u7b26\u5408\u6761\u4ef6\u7684\u65b9\u6848\u3002\u3002\uff08\u6240\u4ee5\u7b54\u6848\u81f3\u5c11\u4e3a 1.\u3002\u3002
\n\u63a5\u7740\u5bf9\u540c\u4e00\u7ec4\u5982\u679c\u6b8b\u4f59 2 \u4e2a\u3002\u3002\u90a3\u4e48\u80af\u5b9a\u4e0d\u6ee1\u8db3\u3002\u3002\u6240\u4ee5\u641c\u7d22\u7684\u8fc7\u7a0b\uff0c\u5bf9\u6bcf\u7ec4\u6570\uff0c\u5c31\u53ea\u6709\u4fdd\u7559\u548c\u4e0d\u4fdd\u7559\u4e24\u79cd\u51b3\u7b56\u4e86\u3002\u3002
\n\u641c\u7d22\u7684\u6bcf\u4e00\u6b65\u90fd\u5047\u8bbe\u540e\u9762\u7684\u6570\u5168\u90e8\u5220\u9664\u3002\u3002\u9010\u6b65\u4fdd\u7559\u4e00\u4e9b\u6570\u5b57\u3002\u3002\u7d2f\u8ba1\u7b54\u6848\u5373\u53ef\u3002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\uff08A \u7565\u3002B \u7ed9\u5b9a\u4e00\u7ec4\u4e00\u79cd\u7c7b \u6590\u6ce2\u90a3\u5951\u6570\u7684\u6784\u9020\u65b9\u5f0f\uff0c\u6bcf\u4e00\u6b65\u53ef\u4ee5\u9009 F[n] = F[n-1] + F[n-2] \u6216\u8005 F[n] = k F[n-1] + F[n-2]\u3002\u3002\u3002\u8981\u6c42\u901a\u8fc7 n \u6b21\u6784\u9020\u5f97\u5230\u6570 r\uff0c\u8981\u6c42\u91c7\u53d6\u7b2c\u4e8c\u79cd\u7b56\u7565\u6700\u5c11\u3002\u3002\u3002\u3002\uff08D\uff1a \u7ed9\u5b9a N \u4e2a\u6570\u3002\u3002\u95ee\u4ece\u4e2d\u53ef\u4ee5\u6709\u591a\u5c11\u79cd\u96c6\u5408\u53ef\u4ee5\u4f7f\u5f97\u96c6\u5408\u4e2d\u7684\u6570\u53ef\u4ee5 % M = 0\u3002\u3002\uff08\u9650\u5236\u65b9\u7a0b\u7ec4\u7684\u7cfb\u6570\u53ea\u53ef\u4ee5\u53d6 {-1, 1}\u3002\u3002\uff08E: Rope \uff1f\u3002Splay \uff1f\u3002\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":[18],"tags":[],"class_list":["post-424","post","type-post","status-publish","format-standard","hentry","category-codeforces"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-6Q","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/424","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=424"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/424\/revisions"}],"predecessor-version":[{"id":425,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/424\/revisions\/425"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=424"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=424"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=424"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}