Beijing Onsite \u7684\u70ed\u8eab\uff0c\u4e0d\u8fc7\u5c45\u7136\u664b\u7ea7\u4e86\uff0c\u4e0b\u4e00\u573a\u8fd8\u662f\u597d\u597d\u6253\uff08\u53d7\u8650\uff09\u4e00\u4e0b\u5427\u3002\u3002\u3002<\/p>\n
\u7ed9\u5b9a n \u4e2a\u4eba\uff0c\u6bcf\u4e2a\u4eba\u6709 m \u4e2a\u6d4b\u91cf\u7ed3\u679c\u3002\u53d6\u6240\u6709\u4eba\u6240\u6709\u6d4b\u91cf\u7ed3\u679c\u7684\u4e2d\u4f4d\u6570\uff08\u5076\u6570\u65f6\u4e0b\u53bb\u6574\uff09\u4e3a\u6700\u7ec8\u7ed3\u679c\u3002
\n\u5df2\u77e5\u6d4b\u91cf\u7ed3\u679c\u5e94\u8be5\u662f goal\uff0c\u95ee\u81f3\u5c11\u4fee\u6539\u51e0\u4e2a\u6d4b\u91cf\u7ed3\u679c\u53ef\u4ee5\u4f7f\u5f97\u7ed3\u679c\u6070\u597d\u4e3a goal\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u6700\u5c11\u9700\u8981\u53c2\u4e0e\u4fee\u6539\u7684\u4eba\u6570\u53c8\u662f\u591a\u5c11\u3002<\/p>\n
\u5982\u679c\u8981\u8ba9\u7ed3\u679c\u6070\u597d\u4e3a goal\uff0c\u90a3\u4e48\u6bd4 goal \u5c0f\u7684\u6570\u548c\u6bd4 goal \u5927\u7684\u6570\u90fd\u4e0d\u80fd\u8d85\u8fc7\u4e00\u534a\uff0c\u663e\u7136\u8fd9\u4e24\u8fb9\u53ea\u4f1a\u6709\u4e00\u8fb9\u4e0d\u7b26\u5408\u3002
\n\u4e8e\u662f\u6211\u4eec\u53ea\u8981\u5173\u5fc3\u8fd9\u4e00\u8fb9\u9700\u8981\u4fee\u6539\u51e0\u4e2a\u6570\u5c31\u597d\u4e86\uff0c\u5e76\u4e14\u73b0\u5728\u53ea\u9700\u8981\u8003\u8651\u4e00\u8fb9\uff0c\u7b2c\u4e8c\u95ee\u53ea\u8981\u7edf\u8ba1\u51fa\u6bcf\u4e2a\u4eba\u53ef\u4ee5\u5e26\u6765\u7684\u8d21\u732e\uff0c\u6392\u5e8f\u8d2a\u5fc3\u5373\u53ef\u3002<\/p>\n
\u7ed9\u5b9a n\uff0c\u6211\u4eec\u5c06 n \u62c6\u5206\u6210\u82e5\u5e72\u4e2a\u6574\u6570\u76f8\u52a0\u7684\u5f62\u5f0f\uff1an = a1 + a2 + … + am\u3002
\n\u8981\u6c42 a \u5e8f\u5217\u4e25\u683c\u9012\u589e\u4e14 a_i \u6574\u9664 a_{i+1}\uff0c\u95ee m \u6700\u5927\u53ef\u4ee5\u662f\u591a\u5c11\u3002<\/p>\n
\u89c2\u5bdf 15 = 1 + 2 + 4 + 8…
\n\u6211\u4eec\u53d1\u73b0\u5982\u679c\u628a 1 \u53bb\u6389\u7684\u8bdd\uff0c\u6709 14 = 2(1 + 2 + 4)…
\n\u8fd9\u6837\u6211\u4eec\u5c31\u53d1\u73b0\u4e86\u4e00\u4e2a\u5b50\u95ee\u9898\uff01
\n\u5b9a\u4e49 f(n) \u8868\u793a\u5c06 n \u5206\u89e3\uff0c\u5e76\u4e14\u7b2c\u4e00\u4e2a\u6570\u662f 1 \u7684\u65b9\u6848\u6570\uff0c\u6bcf\u6b21\u51cf\u53bb 1 \u540e\u679a\u4e3e\u7ea6\u6570\u9012\u5f52\u5373\u53ef\u3002\u90a3\u4e48\u5b9e\u9645\u7684\u7b54\u6848\u53ef\u80fd\u7b2c\u4e00\u4e2a\u6570\u4e0d\u4e3a 1\uff0c\u6240\u4ee5\u5f00\u59cb\u518d\u989d\u5916\u679a\u4e3e\u4e00\u6b21\u7ea6\u6570\u5c31\u597d\u3002
\n\u590d\u6742\u5ea6\u867d\u7136\u4e0d\u592a\u5bb9\u6613\u4f30\u8ba1\uff0c\u4f46\u8c8c\u4f3c\u4e0d\u8bb0\u5fc6\u5316\u4e5f\u80fd\u8fc7\u3002<\/p>\n
Alice \u548c Bob \u62a5\u6570\uff0c\u4ece 1 \u5230 oo\uff0c\u76ee\u6807\u662f\u6bd4\u5bf9\u65b9\u62a5\u7684\u6570\u53ea\u5927\u4e00\u70b9\u3002
\n– \u5982\u679c\u6070\u597d\u5dee\u5c0f\u4e8e\u7b49\u4e8e maxDiff\uff0c\u90a3\u4e48\u5927\u7684\u4e00\u65b9\u83b7\u80dc\uff0c\u5e76\u5f97\u5230 ifNear \u5206\u3002
\n– \u5426\u5219\uff0c\u5c0f\u7684\u4e00\u65b9\u83b7\u80dc\uff0c\u5e76\u5f97\u5230 ifFar \u5206\u3002<\/p>\n
\u53cc\u65b9\u90fd\u91c7\u53d6\u6700\u4f18\u7b56\u7565\u65f6\uff0c\u95ee Alice \u62a5\u7684\u6570\u6070\u597d\u4e3a query \u7684\u6982\u7387\u3002
\n(ifNear < ifFar <= 2\u00d7ifNear)<\/p>\n
\u7b2c\u4e00\u773c\u611f\u89c9\u8fd9\u4e2a\u9898\u5f88\u795e\uff0c\u770b\u4e86\u4e00\u4e0b\u5927\u5bb6\u540e\u6765\u90fd\u662f\u9ad8\u65af\u6d88\u5143\u505a\u7684\u3002\u4f46\u662f\u4e0d\u77e5\u9053\u600e\u4e48\u5217\u65b9\u7a0b\u3002\u540e\u6765\u8bf7\u6559\u4e86\u4e00\u4e0b\u6bd5\u514b\u8001\u5e08\uff0c\u6bd5\u8001\u5e08\u8bf4\u5176\u5b9e\u8fd9\u4e2a\u95ee\u9898\u8ddf\u526a\u5200\u77f3\u5934\u5e03\u662f\u4e00\u6837\u7684\uff0c\u5c31\u4f60\u60f3\u8c61\u4e00\u4e2a\u526a\u5200\u77f3\u5934\u5e03\u6e38\u620f\uff0c\u7136\u540e\u7ed9\u4f60\u4e00\u4e2a\u6536\u76ca\u77e9\u9635\u3002 \u7eb3\u4ec0\u5747\u8861\u867d\u7136\u63d0\u4f9b\u4e86 n \u7ec4\u65b9\u7a0b\uff0c\u4f46\u662f rank \u4f3c\u4e4e\u662f n-1 \u7684\uff0c\u6700\u540e\u522b\u5fd8\u4e86\u52a0\u4e0a\u6240\u6709\u6982\u7387\u5206\u5e03\u4e4b\u548c\u7b49\u4e8e 1\u3002 Beijing Onsite \u7684\u70ed\u8eab\uff0c\u4e0d\u8fc7\u5c45\u7136\u664b\u7ea7\u4e86\uff0c\u4e0b\u4e00\u573a\u8fd8\u662f\u597d\u597d\u6253\uff08\u53d7\u8650\uff09\u4e00\u4e0b\u5427\u3002\u3002\u3002 2019 TCO Algorithm Round 2B Editorial 250 MedianFaking Brief Description \u7ed9\u5b9a n \u4e2a\u4eba\uff0c\u6bcf\u4e2a\u4eba\u6709 m \u4e2a\u6d4b\u91cf\u7ed3\u679c\u3002\u53d6\u6240\u6709\u4eba\u6240\u6709\u6d4b\u91cf\u7ed3\u679c\u7684\u4e2d\u4f4d\u6570\uff08\u5076\u6570\u65f6\u4e0b\u53bb\u6574\uff09\u4e3a\u6700\u7ec8\u7ed3\u679c\u3002 \u5df2\u77e5\u6d4b\u91cf\u7ed3\u679c\u5e94\u8be5\u662f goal\uff0c\u95ee\u81f3\u5c11\u4fee\u6539\u51e0\u4e2a\u6d4b\u91cf\u7ed3\u679c\u53ef\u4ee5\u4f7f\u5f97\u7ed3\u679c\u6070\u597d\u4e3a goal\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u6700\u5c11\u9700\u8981\u53c2\u4e0e\u4fee\u6539\u7684\u4eba\u6570\u53c8\u662f\u591a\u5c11\u3002 Analysis \u5982\u679c\u8981\u8ba9\u7ed3\u679c\u6070\u597d\u4e3a goal\uff0c\u90a3\u4e48\u6bd4 goal \u5c0f\u7684\u6570\u548c\u6bd4 goal \u5927\u7684\u6570\u90fd\u4e0d\u80fd\u8d85\u8fc7\u4e00\u534a\uff0c\u663e\u7136\u8fd9\u4e24\u8fb9\u53ea\u4f1a\u6709\u4e00\u8fb9\u4e0d\u7b26\u5408\u3002 \u4e8e\u662f\u6211\u4eec\u53ea\u8981\u5173\u5fc3\u8fd9\u4e00\u8fb9\u9700\u8981\u4fee\u6539\u51e0\u4e2a\u6570\u5c31\u597d\u4e86\uff0c\u5e76\u4e14\u73b0\u5728\u53ea\u9700\u8981\u8003\u8651\u4e00\u8fb9\uff0c\u7b2c\u4e8c\u95ee\u53ea\u8981\u7edf\u8ba1\u51fa\u6bcf\u4e2a\u4eba\u53ef\u4ee5\u5e26\u6765\u7684\u8d21\u732e\uff0c\u6392\u5e8f\u8d2a\u5fc3\u5373\u53ef\u3002 500 DivisorSequences Brief Description \u7ed9\u5b9a n\uff0c\u6211\u4eec\u5c06 n \u62c6\u5206\u6210\u82e5\u5e72\u4e2a\u6574\u6570\u76f8\u52a0\u7684\u5f62\u5f0f\uff1an = a1 + a2 + … + am\u3002 \u8981\u6c42 a \u5e8f\u5217\u4e25\u683c\u9012\u589e\u4e14 a_i \u6574\u9664 a_{i+1}\uff0c\u95ee m \u6700\u5927\u53ef\u4ee5\u662f\u591a\u5c11\u3002 Analysis \u89c2\u5bdf […]<\/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":[17],"tags":[],"class_list":["post-1509","post","type-post","status-publish","format-standard","hentry","category-topcoder"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-ol","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1509","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=1509"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1509\/revisions"}],"predecessor-version":[{"id":1538,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1509\/revisions\/1538"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=1509"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=1509"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=1509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\u5bf9\u65b9\u628a\u81ea\u5df1\u7684\u7b56\u7565\u7684\u6982\u7387\u5206\u5e03\u5411\u91cf\u5df2\u7ecf\u544a\u8bc9\u4f60\u4e86\uff0c\u5728\u6700\u4f18\u60c5\u51b5\u4e0b\uff0c\u4f60\u53d1\u73b0\u4f60\u5373\u4fbf\u77e5\u9053\u8fd9\u4e2a\u5411\u91cf\u4e5f\u5e76\u4e0d\u80fd\u8ba9\u4f60\u53d6\u5f97\u4efb\u4f55\u4f18\u52bf\u3002
\n\u8fd9\u5c31\u662f\u4f20\u8bf4\u4e2d\u7684 \u7eb3\u4ec0\u5747\u8861<\/a>\uff0c\u4e8e\u662f\u53ea\u8981\u8bbe\u8868\u793a\u62a5 x_i \u7684\u6982\u7387\uff0c\u6839\u636e\u4e0a\u9762\u8fd9\u4e9b\u5173\u7cfb\uff0c\u5217\u51fa\u7ebf\u6027\u65b9\u7a0b\u7ec4\uff0c\u9ad8\u65af\u6d88\u5143\u5373\u53ef\u3002<\/p>\n
\n\u53ef\u4ee5\u9884\u8ba1\u7b54\u6848\u4e0d\u4f1a\u5f88\u5927\uff0c\u53ef\u4ee5\u5e26\u6781\u9650\u6570\u636e\u8dd1\u4e00\u4e0b\u770b\u770b\u8fb9\u754c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"