{"id":226,"date":"2024-04-26T21:17:57","date_gmt":"2024-04-26T13:17:57","guid":{"rendered":"https:\/\/seanxd.com\/?p=226"},"modified":"2024-04-26T21:17:59","modified_gmt":"2024-04-26T13:17:59","slug":"zerojudge-h206","status":"publish","type":"post","link":"https:\/\/seanxd.com\/zh\/zerojudge-h206\/","title":{"rendered":"ZeroJudge H206: \u5f37\u8005\u5c31\u662f\u8981\u6230\uff0c\u4f46\u2026\u2026\u4ec0\u9ebc\u624d\u662f\u5f37\u8005\u5462\uff1f"},"content":{"rendered":"\n\n\n

\u5f37\u8005\u7684\u5bbf\u547d\u5c31\u662f\u8981\u6230\uff0c\u627e\u51fa\u5f37\u8005\u7684\u65b9\u6cd5\u662f\u9019\u6a23\u7684\uff1a<\/p>\n\n\n\n

\u5047\u8a2d\u73fe\u5728\u6709 N \u4eba\uff0c\u6211\u5011\u53ef\u4ee5\u5206\u70ba\u5de6\u534a\u908a N\/2 \u4eba\u548c\u53f3\u534a\u908a N\/2 \u4eba<\/strong>\u3002
\u540c\u6a23\u5730\uff0c\u5c0d\u65bc\u5de6\u534a\u908a N\/2 \u4eba\uff0c\u53ef\u4ee5\u7e7c\u7e8c\u5e73\u5206\u70ba N\/4 \u4eba\u548c N\/4 \u4eba<\/strong>\uff0c
\u76f4\u5230\u7121\u6cd5\u518d\u5e73\u5206\uff0c\u4e5f\u5c31\u662f\u53ea\u5269\u4e0b 1 \u4eba\u70ba\u6b62<\/strong>\u3002<\/p>\n\n\n\n

\u5c0d\u65bc\u53ea\u6709 1 \u4eba\u7684\u5340\u9593\uff0c\u90a3\u4eba\u7576\u7136\u5c31\u662f\u8a72\u5340\u9593\u5167\u7684\u6700\u5f37\u8005\u3002
\u5c0d\u65bc\u5176\u4ed6\u5340\u9593\uff0c\u5247\u5728\u627e\u5230\u5de6\u534a\u908a\u6700\u5f37\u8005<\/code>\u548c\u53f3\u534a\u908a\u6700\u5f37\u8005<\/code>\u5f8c\uff0c\u5c31\u53ef\u4ee5\u7c21\u55ae\u5730\u5c0d\u5169\u6578\u5b57\u6bd4\u8f03\uff0c\u4ee5\u5f97\u5230\u672c\u8eab\u5340\u9593\u6700\u5f37\u8005\u3002<\/p>\n\n\n\n

\u4f46\u662f\u5f37\u8005\u7684\u5b9a\u7fa9\u6642\u5e38\u5728\u8b8a\u5316\uff0c\u6709\u6642\u4ee5\u5c0f\u535a\u5927\uff0c\u6709\u6642\u4ee5\u5927\u640f\u5c0f\uff0c\u5169\u8005\u4ea4\u66ff\u51fa\u73fe\u3002
\u4e5f\u5c31\u662f\u5047\u8a2d\u9019\u56de\u5408\u5927\u8005\u512a\u5148\uff0c\u5247\u4e0b\u56de\u5408\u6703\u662f\u5c0f\u8005\u512a\u5148<\/strong>\uff0c\u4e0b\u4e0b\u56de\u5408\u5247\u53c8\u56de\u5230\u5927\u8005\u512a\u5148\uff0c\u4f9d\u5e8f\u4e0b\u53bb……<\/p>\n\n\n\n

\u9019\u908a\u6211\u5011\u9810\u8a2d\u6700\u521d N \u4eba\u7684\u5340\u9593\u70ba\u5927\u8005\u512a\u5148<\/strong><\/code>\uff0c
\u56e0\u6b64\u6240\u5283\u5206\u51fa\u7684 N\/2, N\/2 \u5340\u9593\u5c07\u70ba\u5c0f\u8005\u512a\u5148\uff0c\u7e7c\u7e8c\u5283\u5206\u51fa\u7684 N\/4, N\/4, N\/4, N\/4 \u5247\u53c8\u56de\u5230\u5927\u8005\u512a\u5148……<\/p>\n\n\n\n

\u7d66\u5b9a\u00a0N \u503c\u548c\u7531\u5de6\u81f3\u53f3\u76f8\u7570\u7684 N \u4eba\u6230\u529b\u503c<\/strong>\uff0c
\u4f9d\u7167\u4e0a\u8ff0\u6bd4\u8f03\u65b9\u6cd5\uff0c\u8acb\u554f\u6700\u5f37\u8005\u6230\u529b\u503c\u6703\u662f\u591a\u5c11<\/strong>\uff1f<\/p>\n\n\n\n

\u8209\u4f8b\u4f86\u8aaa\uff1a\u7576 N = 8\uff0c\u6230\u529b\u503c\u7531\u5de6\u81f3\u53f3\u4f9d\u5e8f\u70ba {1, 2, 3, 4, 5, 6, 7, 8}\uff0c\u5247\u6240\u627e\u51fa\u7684\u6700\u5f37\u8005\u5c07\u70ba 6\u3002
\u4e0b\u5716\u70ba\u5c0b\u627e\u904e\u7a0b\uff0c\u5176\u4e2d\u5340\u9593\u7d05\u6846\u8868\u793a\u8a72\u5340\u9593\u70ba\u5927\u8005\u512a\u5148<\/code>\uff0c\u53cd\u4e4b\u5247\u70ba\u5c0f\u8005\u512a\u5148\u3002<\/p>\n\n\n\n

\"ZeroJudge<\/figure>\n\n\n\n

\u7bc4\u4f8b\u6e2c\u8cc7<\/h2>\n\n\n\n
\u7bc4\u4f8b\u8f38\u5165<\/th>\u7bc4\u4f8b\u8f38\u51fa<\/th><\/tr><\/thead>
\u7b2c\u4e00\u884c\u6709\u4e00\u500b\u6b63\u6574\u6578 N\uff0c
\u4ee3\u8868\u7e3d\u5171\u6709 N \u4eba ( 1 \u2264 N \u2264 1024 )\uff0c\u5176\u4e2d N \u5fc5\u70ba 2 \u7684\u6574\u6578\u6b21\u65b9\u3002
\u7b2c\u4e8c\u884c\u7531\u5de6\u81f3\u53f3\u6709 N \u500b\u76f8\u7570\u6b63\u6574\u6578 xi <\/sub>( 1 \u2264 xi<\/sub> \u2264 N )\uff0c\u5169\u5169\u4e4b\u9593\u4ee5\u7a7a\u683c\u9694\u958b\uff0c\u4ee3\u8868\u6bcf\u500b\u4eba\u6230\u529b\u503c\u3002<\/td>		\u6700\u5f37\u8005\u6230\u529b\u503c<\/td><\/tr>
8
1 2 3 4 5 6 7 8<\/td>		6<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u89e3\u984c\u601d\u8def<\/h2>\n\n\n\n

\u4f7f\u7528\u905e\u8ff4<\/strong>\u7684\u65b9\u5f0f\u5c07\u6578\u91cf\u4e00\u76f4\u5207\u6210\u4e00\u534a<\/strong>\uff0c\u7576\u6578\u5217\u53ea\u5269\u4e0b\u4e00\u500b\u6578\u5b57\u6642 (\u5de6\u754c\u7dda\uff1d\u53f3\u754c\u7dda)<\/strong>\uff0c\u5c31 return \u76ee\u524d\u7684\u6578\u5b57<\/strong>\u3002\u5927\u5c0f\u7684\u5224\u65b7\u53ef\u4ee5\u6bcf\u6b21\u9032\u5165\u51fd\u5f0f\u6642\u5c07\u4e00\u500b\u5e03\u6797\u503c\u53cd\u8f49<\/strong>\u4e26\u4e14 return \u6700\u5927\u503c\u6216\u6700\u5c0f\u503c\u3002<\/p>\n\n\n\n

\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff0dZeroJudge H206: \u5f37\u8005\u5c31\u662f\u8981\u6230\uff0c\u4f46\u2026\u2026\u4ec0\u9ebc\u624d\u662f\u5f37\u8005\u5462\uff1f<\/a><\/h3>\n\n\n\n
#include <iostream>\n#include <vector>\n#include <algorithm>\nusing namespace std;\n\nvector<int>num;\n\nint findMax (int l, int r, bool bigFirst)\n{\n    if (l == r)\n    {\n        return num[l];\n    }\n    if (bigFirst)\n    {\n        int hi = max(findMax(l, (l+r)\/2, false), findMax(((l+r)\/2)+1, r, false));\n        return hi;\n    }\n    int hi = min(findMax(l, (l+r)\/2, true), findMax(((l+r)\/2)+1, r, true));\n    return hi;\n}\n\nint main() {\n    cin.sync_with_stdio(0);\n    cin.tie(0);\n    int N;\n    cin >> N;\n    for (int i = 0; i<N; i++)\n    {\n        int tmp;\n        cin >> tmp;\n        num.push_back(tmp);\n    }\n    cout << findMax(0, int(num.size())-1, true) << "\\n";\n}\n\n\/\/ZeroJudge H206\n\/\/Dr. SeanXD<\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"
\u5f37\u8005\u7684\u5bbf\u547d\u5c31\u662f\u8981\u6230\uff0c\u627e\u51fa\u5f37\u8005\u7684\u65b9\u6cd5\u662f\u9019\u6a23\u7684\uff1a \u5047\u8a2d\u73fe\u5728\u6709 N \u4eba\uff0c\u6211\u5011\u53ef\u4ee5\u5206\u70ba\u5de6\u534a\u908a N\/2 \u4eba\u548c\u53f3\u534a\u908a N\/ […]<\/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":[6],"tags":[20,8,9,28],"class_list":["post-226","post","type-post","status-publish","format-standard","hentry","category-6","tag-20","tag-8","tag-9","tag-28"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/226","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=226"}],"version-history":[{"count":1,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/226\/revisions"}],"predecessor-version":[{"id":228,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/226\/revisions\/228"}],"wp:attachment":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/media?parent=226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/categories?post=226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/tags?post=226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}