{"id":972,"date":"2024-07-29T09:00:00","date_gmt":"2024-07-29T01:00:00","guid":{"rendered":"https:\/\/seanxd.com\/?p=972"},"modified":"2024-06-21T11:53:00","modified_gmt":"2024-06-21T03:53:00","slug":"zerojudge-k571","status":"publish","type":"post","link":"https:\/\/seanxd.com\/zh\/zerojudge-k571\/","title":{"rendered":"ZeroJudge K571: \u95dc\u65bc\u7b2c\u4e8c\u9053\u984c\u9019\u4ef6\u4e8b"},"content":{"rendered":"\n\n\n<p>\u300c\u597d\u8036\uff01\u662f\u6821\u5167\u8cfd\u7b2c\u4e8c\u984c\uff01\u300d<\/p>\n\n\n\n<p>\u70ba\u4e86\u6176\u795d\u9806\u5229\u5beb\u5230\u7b2c\u4e8c\u984c\uff0c\u4f60\u60f3\u8981\u7528\u76e1\u53ef\u80fd\u591a\u7684 2\uff0c\u4e5f\u5c31\u662f 222\u2026. \u4f86\u8868\u9054\u4f60\u7684\u559c\u6085\u4e4b\u60c5\uff1b<br>\u5176\u4e2d\u4f60\u6709\u6700\u591a K \u6b21\u6a5f\u6703\uff0c\u80fd\u5920\u628a\u4efb\u610f\u4f4d\u7f6e\u7684\u6578\u5b57\u6539\u8b8a\u6210\u4f60\u60f3\u8981\u7684\u503c\u3002<\/p>\n\n\n\n<p>\u7d66\u5b9a N \u500b\u6578\u5b57\uff0c<br>\u5728\u6700\u591a\u53ea\u80fd\u6539\u8b8a\u5176\u4e2d K \u500b\u6578\u5b57\u7684\u60c5\u6cc1\u4e0b\uff0c\u6700\u591a\u53ef\u4ee5\u627e\u5230\u5e7e\u500b\u300c\u9023\u7e8c\u7684 2\u300d\u5462\uff1f<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7bc4\u4f8b\u6e2c\u8cc7<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7bc4\u4f8b\u8f38\u5165<\/th><th>\u7bc4\u4f8b\u8f38\u51fa<\/th><\/tr><\/thead><tbody><tr><td>\u7b2c\u4e00\u884c\u6709\u5169\u500b\u6574\u6578 N \u548c K\uff0c\u4ee3\u8868\u6578\u5b57\u7e3d\u6578 \u548c \u53ef\u6539\u8b8a\u6b21\u6578<br>1 \u2264 N \u2264 8*10<sup>4<\/sup><br>0 \u2264 K \u2264 N<br>\u7b2c\u4e8c\u884c\u7531\u5de6\u81f3\u53f3\u6709 N \u500b\u6574\u6578 x<sub>i<\/sub>\uff0c\u4ee3\u8868\u6578\u5b57\u5167\u5bb9<br>0 \u2264 x<sub>i<\/sub> \u2264 2<\/td><td>\u81f3\u591a\u53ea\u80fd\u6539\u8b8a K \u500b\u6578\u5b57\u7684\u60c5\u6cc1\u4e0b<br>\u6700\u591a\u53ef\u4ee5\u627e\u5230\u7684\u300c\u9023\u7e8c\u7684 2\u300d\u7684\u9577\u5ea6<\/td><\/tr><tr><td>14 2<br>2 2 0 2 0 0 0 2 2 2 0 0 2 2<\/td><td>7<\/td><\/tr><tr><td>6 2<br>2 2 0 2 2 0<\/td><td>6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u984c\u601d\u8def<\/h2>\n\n\n\n<p>\u9810\u8a2d\u4e09\u500b\u8b8a\u6578 l = 0\u3001zero = 0\u3001ans = -99999\u3002\u8dd1\u4e00\u500b For\u8ff4\u5708 for (int r = 0; r&lt;N; r++)\uff0cl \u4ee3\u8868\u5de6\u908a\u754c\uff0cr \u4ee3\u8868\u53f3\u908a\u754c\u3002\u7576 r \u4f4d\u7f6e\u4e0d\u662f 2 \u6642\uff0c\u5c07 zero++\uff0c\u4e26\u4e14\u5224\u65b7 zero \u662f\u5426\u6709 > K\uff0c\u5982\u679c\u6709\u7684\u8a71\uff0c\u5c31\u8981\u8dd1\u4e00\u500b While \u8ff4\u5708\uff0c\u5c0b\u627e\u4e0a\u4e00\u500b \u975e 2 \u6578\u5b57\u7684\u4e0b\u4e00\u500b 2 \u5728\u54ea\u88e1\uff0c\u5982\u679c l \u4f4d\u7f6e\u7684\u6578\u5b57\u662f 2 \uff0c\u5247 l++\uff0c\u5426\u5247\u5c31\u5c07 While\u8ff4\u5708 break\uff0c\u4e26\u4e14\u5728 While\u8ff4\u5708\u5916\u9762\u518d\u9032\u884c\u4e00\u6b21 l++\u3002\u6bcf\u4e00\u6b21\u4e0d\u7ba1\u662f\u4e0d\u662f 2 \u90fd\u9700\u8981\u5224\u65b7 r &#8211; l +1 \u662f\u5426\u70ba\u6700\u5927\u503c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff0d<a href=\"https:\/\/zerojudge.tw\/ShowProblem?problemid=k571\" target=\"_blank\" rel=\"noreferrer noopener\">ZeroJudge K571: \u95dc\u65bc\u7b2c\u4e8c\u9053\u984c\u9019\u4ef6\u4e8b<\/a><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-cpp\" data-lang=\"C++\"><code>#include &lt;iostream&gt;\n#include &lt;vector&gt;\nusing namespace std;\n\nint main() {\n    cin.sync_with_stdio(0);\n    cin.tie(0);\n    int N, K;\n    cin &gt;&gt; N &gt;&gt; K;\n    vector&lt;int&gt;num;\n    for (int i = 0; i&lt;N; i++) {\n        int tmp;\n        cin &gt;&gt; tmp;\n        num.push_back(tmp);\n    }\n    int l = 0, zero = 0, ans = -99999;\n    for (int r = 0; r&lt;N; r++) {\n        if (num[r] != 2) {\n            zero++;\n            if (zero &gt; K) {\n                while(true) {\n                    if(num[l] == 2) l++;\n                    else break;\n                }\n                l++;\n            }\n        }\n        ans = max(ans, r-l+1);\n    }\n    cout &lt;&lt; ans &lt;&lt; &quot;\\n&quot;;\n}\n\n\/\/ZeroJudge K571\n\/\/Dr. SeanXD<\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u300c\u597d\u8036\uff01\u662f\u6821\u5167\u8cfd\u7b2c\u4e8c\u984c\uff01\u300d \u70ba\u4e86\u6176\u795d\u9806\u5229\u5beb\u5230\u7b2c\u4e8c\u984c\uff0c\u4f60\u60f3\u8981\u7528\u76e1\u53ef\u80fd\u591a\u7684 2\uff0c\u4e5f\u5c31\u662f 222\u2026. \u4f86\u8868\u9054\u4f60\u7684\u559c\u6085 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[29],"tags":[20,8,9],"class_list":["post-972","post","type-post","status-publish","format-standard","hentry","category-zerojudge-","tag-20","tag-8","tag-9"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/972","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/comments?post=972"}],"version-history":[{"count":1,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/972\/revisions"}],"predecessor-version":[{"id":973,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/972\/revisions\/973"}],"wp:attachment":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/media?parent=972"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/categories?post=972"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/tags?post=972"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}