{"id":109,"date":"2018-09-09T11:28:00","date_gmt":"2018-09-09T03:28:00","guid":{"rendered":"https:\/\/www.wangliguang.cn\/?p=109"},"modified":"2025-08-05T09:57:05","modified_gmt":"2025-08-05T01:57:05","slug":"openjudge2748%e5%85%a8%e6%8e%92%e5%88%97","status":"publish","type":"post","link":"https:\/\/wangliguang.cn\/?p=109","title":{"rendered":"Open Judge2748:\u5168\u6392\u5217"},"content":{"rendered":"<p>\u4eca\u5929\u5728\u5b66\u4e60\u5317\u4eac\u5927\u5b66\u7684MOOC\u7a0b\u5e8f\u8bbe\u8ba1\u4e0e\u7b97\u6cd5\u5206\u6790\uff0c\u5b66\u5230\u4e86\u9012\u5f52\u7684\u7ae0\u8282\uff0c\u91cc\u9762\u6709\u8fd9\u4e48\u4e00\u9053\u4f5c\u4e1a\u9898\u3002\u662f\u8fd9\u6837\u8bf4\u7684\uff1a<br \/>\n\u63cf\u8ff0<\/p>\n<blockquote><p>\n  \u7ed9\u5b9a\u4e00\u4e2a\u7531\u4e0d\u540c\u7684\u5c0f\u5199\u5b57\u6bcd\u7ec4\u6210\u7684\u5b57\u7b26\u4e32\uff0c\u8f93\u51fa\u8fd9\u4e2a\u5b57\u7b26\u4e32\u7684\u6240\u6709\u5168\u6392\u5217\u3002 \u6211\u4eec\u5047\u8bbe\u5bf9\u4e8e\u5c0f\u5199\u5b57\u6bcd\u6709\u2019a\u2019 < \u2018b\u2019 < \u2026 < \u2018y\u2019 < \u2018z\u2019\uff0c\u800c\u4e14\u7ed9\u5b9a\u7684\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u6bcd\u5df2\u7ecf\u6309\u7167\u4ece\u5c0f\u5230\u5927\u7684\u987a\u5e8f\u6392\u5217\u3002  <br \/>\n  \u8f93\u5165 <br \/>\n      \u8f93\u5165\u53ea\u6709\u4e00\u884c\uff0c\u662f\u4e00\u4e2a\u7531\u4e0d\u540c\u7684\u5c0f\u5199\u5b57\u6bcd\u7ec4\u6210\u7684\u5b57\u7b26\u4e32\uff0c\u5df2\u77e5\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u57281\u52306\u4e4b\u95f4\u3002 <br \/>\n  \u8f93\u51fa <br \/>\n      \u8f93\u51fa\u8fd9\u4e2a\u5b57\u7b26\u4e32\u7684\u6240\u6709\u6392\u5217\u65b9\u5f0f\uff0c\u6bcf\u884c\u4e00\u4e2a\u6392\u5217\u3002\u8981\u6c42\u5b57\u6bcd\u5e8f\u6bd4\u8f83\u5c0f\u7684\u6392\u5217\u5728\u524d\u9762\u3002\u5b57\u6bcd\u5e8f\u5982\u4e0b\u5b9a\u4e49\uff1a <br \/>\n      \u5df2\u77e5S = s1s2\u2026sk , T = t1t2\u2026tk\uff0c\u5219S < T \u7b49\u4ef7\u4e8e\uff0c\u5b58\u5728p (1 <= p <= k)\uff0c\u4f7f\u5f97 <br \/>\n      s1 = t1, s2 = t2, \u2026, sp - 1 = tp - 1, sp < tp\u6210\u7acb\u3002\n<\/p><\/blockquote>\n<p>\u6837\u4f8b\u8f93\u5165<\/p>\n<blockquote><p>\n  abc\n<\/p><\/blockquote>\n<p>\u6837\u4f8b\u8f93\u51fa<\/p>\n<blockquote><p>\n  abc <br \/>\n      acb <br \/>\n      bac <br \/>\n      bca <br \/>\n      cab <br \/>\n      cba\n<\/p><\/blockquote>\n<p>\u9996\u5148\u5148\u7ed9\u51fa\u4ee3\u7801\u3002\u867d\u7136\u521a\u542c\u8001\u5e08\u8bb2\u4e86N\u7687\u540e\u95ee\u9898\uff0c\u611f\u89c9\u91cc\u9762\u7684\u9012\u5f52\u601d\u60f3\u548c\u672c\u9898\u7c7b\u4f3c\u3002\u4f46\u662f\u6211\u4e00\u4e0b\u5b50\u8fd8\u662f\u6ca1\u6709\u5199\u51fa\u6765\uff0c\u53c2\u8003\u4e86\u5176\u4ed6\u4eba\u7684\u4ee3\u7801\u540e\u5199\u51fa\u4e86\u6b64\u6bb5\u4ee3\u7801\uff0c\u611f\u8c22\u5927\u795e\u3002<\/p>\n<pre class=\"prettyprint\"><code class=\"language-C++ hljs cpp\"><span class=\"hljs-preprocessor\">#include<iostream><\/span>\n<span class=\"hljs-preprocessor\">#include<cstdio><\/span>\n<span class=\"hljs-preprocessor\">#include<cstdlib><\/span>\n<span class=\"hljs-preprocessor\">#include<cstring>  <span class=\"hljs-comment\">\/\/\u5728\u540e\u9762\u4f7f\u7528memset\u51fd\u6570\u548cstrlen\u9700\u8981\u5305\u542b\u8fd9\u4e2a\u5934\u6587\u4ef6<\/span><\/span>\n<span class=\"hljs-keyword\">using<\/span> <span class=\"hljs-keyword\">namespace<\/span> <span class=\"hljs-built_in\">std<\/span>;\n<span class=\"hljs-keyword\">const<\/span> <span class=\"hljs-keyword\">int<\/span> N=<span class=\"hljs-number\">7<\/span>;\n<span class=\"hljs-keyword\">char<\/span> str[N];\n<span class=\"hljs-keyword\">char<\/span> result[N];\n<span class=\"hljs-keyword\">int<\/span> isVisit[N];\n<span class=\"hljs-keyword\">int<\/span> num = <span class=\"hljs-number\">0<\/span>;\n<span class=\"hljs-keyword\">void<\/span> PutStr(<span class=\"hljs-keyword\">int<\/span> n){\n    <span class=\"hljs-keyword\">if<\/span>(n == num){\n        <span class=\"hljs-built_in\">cout<\/span> << result << endl;\n        <span class=\"hljs-keyword\">return<\/span> ;\n    }\n    <span class=\"hljs-keyword\">for<\/span>(<span class=\"hljs-keyword\">int<\/span> i = <span class=\"hljs-number\">0<\/span>; i < num; i++){\n        <span class=\"hljs-keyword\">if<\/span>(isVisit[i] == <span class=\"hljs-number\">0<\/span>){\n            isVisit[i] = <span class=\"hljs-number\">1<\/span>;\n            result[n] = str[i];\n            PutStr(n + <span class=\"hljs-number\">1<\/span>);  <span class=\"hljs-comment\">\/\/\u5f00\u59cb\u9012\u5f52<\/span>\n            isVisit[i] = <span class=\"hljs-number\">0<\/span>;\n        }\n    }\n}\n<span class=\"hljs-keyword\">int<\/span> main(){\n    <span class=\"hljs-built_in\">memset<\/span>(result,<span class=\"hljs-number\">0<\/span>,<span class=\"hljs-keyword\">sizeof<\/span>(result));  <span class=\"hljs-comment\">\/\/\u521d\u59cb\u5316\u64cd\u4f5c<\/span>\n    <span class=\"hljs-built_in\">memset<\/span>(isVisit,<span class=\"hljs-number\">0<\/span>,<span class=\"hljs-keyword\">sizeof<\/span>(isVisit));\n    <span class=\"hljs-keyword\">while<\/span>(<span class=\"hljs-built_in\">cin<\/span> >> str){\n        num = <span class=\"hljs-built_in\">strlen<\/span>(str);\n        PutStr(<span class=\"hljs-number\">0<\/span>);\n        <span class=\"hljs-built_in\">cout<\/span> << endl;\n    }\n    <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-number\">0<\/span>;\n}<\/code><\/pre>\n<p>\u4ee5\u540e\u6211\u7684\u6587\u7ae0\u90fd\u4f1a\u4f7f\u7528Markdown\u6765\u5199\uff0c\u8fd9\u91cc\u9762\u4ee3\u7801\u7684\u683c\u5f0f\u6709\u4e00\u4e9b\u4e0d\u4e00\u6837\u3002<br \/>\n\u8fd9\u91cc\u89e3\u91ca\u4e00\u4e0bPutStr\u51fd\u6570\u3002PutStr\u91cc\u9762\u7684\u9012\u5f52\u8fd8\u662f\u6bd4\u8f83\u5de7\u5999\u7684\u3002\u9996\u5148\u8fdb\u6765\u4f1a\u5224\u65adn\u548cnum\u662f\u5426\u76f8\u7b49\uff0c\u5982\u679c\u76f8\u7b49\u4e86\u5c31\u628a\u7ed3\u679c\u8f93\u51fa\u6765\uff0c\u4f5c\u4e3a\u4e00\u79cd\u6392\u5217\u65b9\u5f0f\u3002 <br \/>\n\u518d\u6765\u8bf4\u540e\u9762\u7684\u4e00\u4e2a\u5faa\u73af\u3002\u8fd9\u4e2a\u5faa\u73af\u4ecei=0\u5f00\u59cb\uff0cisVisit[N]\u662f\u7528\u6765\u5b58\u50a8\u5b57\u7b26\u662f\u4e0d\u662f\u5df2\u7ecf\u7528\u8fc7\u4e86\u3002\u5982\u679cisVisit[i]==0\uff0c\u8bf4\u660e\u6ca1\u88ab\u7528\u8fc7\uff0c\u5c31\u8fdb\u5165if\uff0c\u540c\u65f6\u6807\u8bb0\u4e3a1.\u63a5\u4e0b\u6765\u628a\u6b64\u5b57\u7b26\u653e\u5165result[n]\u91cc\u9762\u3002\u6ce8\u610f\uff0cn\u4e00\u5f00\u59cb\u662f0\uff0c\u63a5\u4e0b\u6765\u5f00\u59cb\u9012\u5f52PutStr\uff08n+1\uff09\u3002PutStr\uff08n+1\uff09\u91cc\u9762\u7684\u5faa\u73af\u4ecd\u662f\u4ecei=0\u5f00\u59cb\u7684\uff0c\u76f4\u5230\u627e\u5230\u672a\u88ab\u4f7f\u7528\u7684\u5b57\u7b26\uff0c\u7ee7\u7eed\u9012\u5f52\u3002\u8fd9\u6837\u76f4\u5230\u6700\u540e\uff0c\u4e00\u79cd\u65b9\u6848\u5c31\u5f62\u6210\u4e86\u3002\u4e4b\u540e\u5f00\u59cb\u8fd4\u56de\u3002\u4ee5abc\u7684\u4f8b\u5b50\u4e3a\u4f8b\uff0c\u7b2c\u4e00\u6b21\u5f62\u6210abc\u540e\uff0c\u4f1a\u518d\u5f62\u6210acb\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u5929\u5728\u5b66\u4e60\u5317\u4eac\u5927\u5b66\u7684MOOC\u7a0b\u5e8f\u8bbe\u8ba1\u4e0e\u7b97\u6cd5\u5206\u6790\uff0c\u5b66\u5230\u4e86\u9012\u5f52\u7684\u7ae0\u8282\uff0c\u91cc\u9762\u6709\u8fd9\u4e48\u4e00\u9053\u4f5c\u4e1a\u9898\u3002\u662f\u8fd9\u6837\u8bf4\u7684\uff1a \u63cf\u8ff0 \u7ed9&hellip; <a href=\"https:\/\/wangliguang.cn\/?p=109\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">Open Judge2748:\u5168\u6392\u5217<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[44],"class_list":["post-109","post","type-post","status-publish","format-standard","hentry","category-22","tag-44"],"_links":{"self":[{"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/posts\/109","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=109"}],"version-history":[{"count":1,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/posts\/109\/revisions"}],"predecessor-version":[{"id":678,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=\/wp\/v2\/posts\/109\/revisions\/678"}],"wp:attachment":[{"href":"https:\/\/wangliguang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=109"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wangliguang.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}