{"id":1799,"date":"2021-10-27T01:12:38","date_gmt":"2021-10-26T17:12:38","guid":{"rendered":"http:\/\/www.shuizilong.com\/house\/?p=1799"},"modified":"2021-10-27T01:13:14","modified_gmt":"2021-10-26T17:13:14","slug":"atcoder-beginner-contest-224","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/atcoder-beginner-contest-224\/","title":{"rendered":"AtCoder Beginner Contest 224"},"content":{"rendered":"<p>\u5728\u8fd9\u91cc\u8f93\u5165\u8981\u8f6c\u6362\u7684\u5185\u5bb9- <a href=\"https:\/\/atcoder.jp\/contests\/abc224\/tasks\">https:\/\/atcoder.jp\/contests\/abc224\/tasks<\/a><\/p>\n<h2>E. Integers on Grid<\/h2>\n<p>\u7c7b\u4f3c\u7ecf\u5178\u7684 <a href=\"http:\/\/poj.org\/problem?id=1088\">POJ 1088. \u6ed1\u96ea<\/a>\u3002\u3002<br \/>\n\u4e0d\u8fc7\u72b6\u6001\u662f\u7a00\u758f\u7684\u3002\u3002\u7528\u9ad8\u5ea6\u5212\u5206\u9636\u6bb5\uff0c\u7ef4\u62a4\u4e00\u4e0b\u6bcf\u4e00\u884c\u6bcf\u4e00\u5217\u524d\u9636\u6bb5\u7684\u6700\u4f18\u89e3\uff0c\u8f6c\u79fb\u5c31\u53ef\u4ee5\u4f18\u5316\u5230 O(1) \u4e86\u3002<\/p>\n<h2>F. Problem where +s Separate Digits<\/h2>\n<p>\u7ed9\u5b9a\u4e00\u4e2a\u6570\u5b57\u4e32\uff0c\u53ef\u4ee5\u5728\u4e2d\u95f4\u6dfb\u52a0\u82e5\u5e72 + \u53f7\uff0c<br \/>\n\u95ee\u6240\u6709\u53ef\u80fd\u7684\u8868\u8fbe\u5f0f\u7684\u548c\u662f\u591a\u5c11\u3002<\/p>\n<p>\u6bd4\u8d5b\u65f6\u6211\u7684\u505a\u6cd5\u662f\uff0c\u5148\u679a\u4e3e\u6700\u540e\u4e00\u4e2a\u52a0\u53f7\u7684\u4f4d\u7f6e\uff0c\u5199\u51fa\u66b4\u529b\u7684 O(n2) dp\u3002\u3002\u3002<br \/>\n\u7136\u540e\u4ed4\u7ec6\u89c2\u5bdf\uff0c\u628a\u8f6c\u79fb\u4e5f\u4f18\u5316\u6210 O(1)\u3002\u3002\u3002\u3002<\/p>\n<p>\u9898\u89e3\u7ed9\u51fa\u7684\u65b9\u6cd5\u662f\uff0c\u7c7b\u6bd4\u671f\u671b\u7684\u7ebf\u6027\u6027\u3002\u3002\u3002\u53bb\u679a\u4e3e\u6bcf\u4e2a\u5b57\u7b26\u7684\u8d21\u732e\u3002\u3002\u6bd4\u4e0a\u9762\u7684\u505a\u6cd5\u8981\u597d\u5199\u3002\u3002\u3002\u3002<\/p>\n<h2>G. Roll or Increment<\/h2>\n<p>\u662f\u975e\u5e38\u6709\u8da3\u7684\u9898\u3002\u3002\u8ba9\u6211\u60f3\u8d77\u4e86 <a href=\"https:\/\/www.shuizilong.com\/house\/archives\/project-euler-503-compromise-or-persist\/\">PE. 503<\/a>..<br \/>\n\u8bf4\u6709\u4e00\u679a\u9ab0\u5b50\u3002\u3002\u6295\u63b7\u5b8c\u4e4b\u540e\u53ef\u4ee5 d*A \u7684\u4ee3\u4ef7\u8ba9\u6570\u5b57 +d\uff0c\u6216\u8005 B \u7684\u4ee3\u4ef7\u91cd\u65b0\u6295\u4e00\u6b21..<br \/>\n\u95ee\u7b2c\u4e00\u6b21\u6295\u51fa s \u65f6\uff0c\u671f\u671b\u6700\u5c11\u591a\u5c11\u4ee3\u4ef7\u5f97\u5230 t<\/p>\n<p>\u663e\u7136\u5927\u4e8e s \u7684\u8bdd\u4e00\u5b9a\u8981\u91cd\u65b0\u6295\uff0c\u5426\u5219\u8981\u4e48\u91cd\u65b0\u6295\uff0c\u8981\u4e48\u52a0\u3002\u3002<br \/>\n\u548c PE 503 \u7c7b\u4f3c\u3002\u3002\u8fd9\u4e2a\u51b3\u7b56\u7684\u5206\u5272\u70b9\u4e5f\u662f\u5177\u6709\u5355\u8c03\u6027\u7684\u3002\u3002\u3002<br \/>\n\uff08\u51c6\u786e\u7684\u8bf4\u3002\u3002\u8fd9\u4e2a\u9898\u91cc\u662f\u51f8\u6027\u3002\u3002\u6240\u4ee5\u53ef\u4ee5\u4e09\u5206\u51b3\u7b56\u5206\u5272\u70b9\u3002\u3002\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u901a\u8fc7\u4e86\uff09<br \/>\n\uff08\u7136\u540e\u548c PE 503 \u4e00\u6837\u3002\u3002\u8fd9\u4e24\u4e2a\u9898\u7684\u51b3\u7b56\u5206\u5272\u70b9\u3002\u3002\u5176\u5b9e\u90fd\u662f\u53ef\u4ee5 O(1) \u7b97\u51fa\u6765\u7684\u3002\u3002\u4e0d\u8fc7\u6211\u90fd\u4e0d\u4f1a\uff09<\/p>\n<h2>H. Security Camera 2<\/h2>\n<p>\u6700\u540e\u4e00\u9898\u8bf4\u7ed9\u5b9a\u4e00\u4e2a\u4e8c\u5206\u56fe\u3002\u3002\u7ed9\u5b9a\u6bcf\u4e2a\u8282\u70b9\u6743\u503c +1 \u7684\u4ee3\u4ef7\u3002\u3002\u3002<br \/>\n\u7136\u540e\u5bf9\u4e8e\u6240\u6709\u7684\u8fb9\u3002\u3002\u8981\u6c42\u8fde\u7ed3\u4e24\u4e2a\u70b9\u7684\u6743\u503c\u548c\u5927\u4e8e\u8fb9\u6743\u3002\u3002\u6c42\u6700\u5c0f\u4ee3\u4ef7\u3002\u3002<br \/>\n\u5982\u679c\u8fb9\u6743\u662f 1.\u3002\u3002\u90a3\u4e48\u5c31\u662f\u6700\u5c0f\u8986\u76d6\u96c6\u3002\u3002\u6240\u4ee5\u5927\u6982\u53ef\u4ee5\u4e0a\u8d39\u7528\u6d41\u3002\u3002<\/p>\n<p>\u4e8b\u5b9e\u4e0a\u4e5f\u786e\u5b9e\u662f\u8d39\u7528\u6d41\uff0c\u5efa\u6a21\u9700\u8981\u4f7f\u7528\u7ebf\u6027\u89c4\u5212\u5bf9\u5076\u3002\u3002\u3002<br \/>\n\u5e94\u8be5\u662f\u6700\u7b80\u5355\u7684\u7ebf\u6027\u89c4\u5212\u5bf9\u5076\u6a21\u578b\u3002\u3002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u8fd9\u91cc\u8f93\u5165\u8981\u8f6c\u6362\u7684\u5185\u5bb9- https:\/\/atcoder.jp\/contests\/abc224\/tasks E. Integers on Grid \u7c7b\u4f3c\u7ecf\u5178\u7684 POJ 1088. \u6ed1\u96ea\u3002\u3002 \u4e0d\u8fc7\u72b6\u6001\u662f\u7a00\u758f\u7684\u3002\u3002\u7528\u9ad8\u5ea6\u5212\u5206\u9636\u6bb5\uff0c\u7ef4\u62a4\u4e00\u4e0b\u6bcf\u4e00\u884c\u6bcf\u4e00\u5217\u524d\u9636\u6bb5\u7684\u6700\u4f18\u89e3\uff0c\u8f6c\u79fb\u5c31\u53ef\u4ee5\u4f18\u5316\u5230 O(1) \u4e86\u3002 F. Problem where +s Separate Digits \u7ed9\u5b9a\u4e00\u4e2a\u6570\u5b57\u4e32\uff0c\u53ef\u4ee5\u5728\u4e2d\u95f4\u6dfb\u52a0\u82e5\u5e72 + \u53f7\uff0c \u95ee\u6240\u6709\u53ef\u80fd\u7684\u8868\u8fbe\u5f0f\u7684\u548c\u662f\u591a\u5c11\u3002 \u6bd4\u8d5b\u65f6\u6211\u7684\u505a\u6cd5\u662f\uff0c\u5148\u679a\u4e3e\u6700\u540e\u4e00\u4e2a\u52a0\u53f7\u7684\u4f4d\u7f6e\uff0c\u5199\u51fa\u66b4\u529b\u7684 O(n2) dp\u3002\u3002\u3002 \u7136\u540e\u4ed4\u7ec6\u89c2\u5bdf\uff0c\u628a\u8f6c\u79fb\u4e5f\u4f18\u5316\u6210 O(1)\u3002\u3002\u3002\u3002 \u9898\u89e3\u7ed9\u51fa\u7684\u65b9\u6cd5\u662f\uff0c\u7c7b\u6bd4\u671f\u671b\u7684\u7ebf\u6027\u6027\u3002\u3002\u3002\u53bb\u679a\u4e3e\u6bcf\u4e2a\u5b57\u7b26\u7684\u8d21\u732e\u3002\u3002\u6bd4\u4e0a\u9762\u7684\u505a\u6cd5\u8981\u597d\u5199\u3002\u3002\u3002\u3002 G. Roll or Increment \u662f\u975e\u5e38\u6709\u8da3\u7684\u9898\u3002\u3002\u8ba9\u6211\u60f3\u8d77\u4e86 PE. 503.. \u8bf4\u6709\u4e00\u679a\u9ab0\u5b50\u3002\u3002\u6295\u63b7\u5b8c\u4e4b\u540e\u53ef\u4ee5 d*A \u7684\u4ee3\u4ef7\u8ba9\u6570\u5b57 +d\uff0c\u6216\u8005 B \u7684\u4ee3\u4ef7\u91cd\u65b0\u6295\u4e00\u6b21.. \u95ee\u7b2c\u4e00\u6b21\u6295\u51fa s \u65f6\uff0c\u671f\u671b\u6700\u5c11\u591a\u5c11\u4ee3\u4ef7\u5f97\u5230 t \u663e\u7136\u5927\u4e8e s \u7684\u8bdd\u4e00\u5b9a\u8981\u91cd\u65b0\u6295\uff0c\u5426\u5219\u8981\u4e48\u91cd\u65b0\u6295\uff0c\u8981\u4e48\u52a0\u3002\u3002 \u548c PE 503 \u7c7b\u4f3c\u3002\u3002\u8fd9\u4e2a\u51b3\u7b56\u7684\u5206\u5272\u70b9\u4e5f\u662f\u5177\u6709\u5355\u8c03\u6027\u7684\u3002\u3002\u3002 \uff08\u51c6\u786e\u7684\u8bf4\u3002\u3002\u8fd9\u4e2a\u9898\u91cc\u662f\u51f8\u6027\u3002\u3002\u6240\u4ee5\u53ef\u4ee5\u4e09\u5206\u51b3\u7b56\u5206\u5272\u70b9\u3002\u3002\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u901a\u8fc7\u4e86\uff09 \uff08\u7136\u540e\u548c [&hellip;]<\/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-1799","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-t1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1799","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=1799"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1799\/revisions"}],"predecessor-version":[{"id":1800,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/1799\/revisions\/1800"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=1799"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=1799"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=1799"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}