{"id":2367,"date":"2023-02-19T17:21:11","date_gmt":"2023-02-19T09:21:11","guid":{"rendered":"https:\/\/www.shuizilong.com\/house\/?p=2367"},"modified":"2023-02-19T17:21:11","modified_gmt":"2023-02-19T09:21:11","slug":"the-1st-universal-cup-stage-4-ukraine","status":"publish","type":"post","link":"https:\/\/www.shuizilong.com\/house\/archives\/the-1st-universal-cup-stage-4-ukraine\/","title":{"rendered":"The 1st Universal Cup, Stage 4, Ukraine"},"content":{"rendered":"<p><a href=\"https:\/\/qoj.ac\/contest\/1106\">https:\/\/qoj.ac\/contest\/1106<\/a><\/p>\n<h2>Problem A.<\/h2>\n<pre class=\"brush: cpp; light: false; title: \u8d2a\u5fc3; toolbar: true; notranslate\" title=\"\u8d2a\u5fc3\">\r\n#include &lt;lastweapon\/io&gt;\r\nusing namespace lastweapon;\r\n\r\nconst int N = int(2e5) + 9;\r\nLL a&#x5B;N]; int n;\r\nLL z;\r\n\r\nint main() {\r\n#ifndef ONLINE_JUDGE\r\n    freopen(&quot;in.txt&quot;, &quot;r&quot;, stdin);\r\n#endif\r\n\r\n    Rush {\r\n        RD(n); REP(i, n) RD(a&#x5B;i]); sort(a, a+n);\r\n        LL z = a&#x5B;n-1]*a&#x5B;n-2] + a&#x5B;1]*a&#x5B;0];\r\n        DWN(i, n-2, 0) z += a&#x5B;i] * a&#x5B;i+2];\r\n        cout &lt;&lt; z &lt;&lt; endl;\r\n    }\r\n}\r\n\r\n<\/pre>\n<h2>Problem B. Binary Arrays and Sliding Sums<\/h2>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/qoj.ac\/contest\/1106 Problem A. #include &lt;lastweapon\/io&gt; using namespace lastweapon; const int N = int(2e5) + 9; LL a&#x5B;N]; int n; LL z; int main() { #ifndef ONLINE_JUDGE freopen(&quot;in.txt&quot;, &quot;r&quot;, stdin); #endif Rush { RD(n); REP(i, n) RD(a&#x5B;i]); sort(a, a+n); LL z = a&#x5B;n-1]*a&#x5B;n-2] + a&#x5B;1]*a&#x5B;0]; DWN(i, n-2, 0) z += a&#x5B;i] * a&#x5B;i+2]; cout &lt;&lt; z [&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-2367","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-Cb","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/2367","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=2367"}],"version-history":[{"count":1,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/2367\/revisions"}],"predecessor-version":[{"id":2368,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/2367\/revisions\/2368"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=2367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=2367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=2367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}