{"id":88,"date":"2011-08-05T13:27:15","date_gmt":"2011-08-05T05:27:15","guid":{"rendered":"http:\/\/wangkaixuan.tech\/?p=88"},"modified":"2020-06-03T13:27:53","modified_gmt":"2020-06-03T05:27:53","slug":"poj-1159-palindrome","status":"publish","type":"post","link":"http:\/\/www.wangkaixuan.tech\/?p=88","title":{"rendered":"poj 1159 Palindrome"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>\/*\n\u5bf9\u4e8e\u4e00\u4e2a\u8fde\u52a8\u6001\u89c4\u5212\u662f\u4ec0\u4e48\u90fd\u4e0d\u77e5\u9053\u7684\u4eba\u6765\u8bb2 \nAC\u8fd9\u9053\u9898\u7684\u96be\u5ea6\u8fd8\u662f\u5f88\u5927\u7684 \n\u6240\u4ee5\u8fd9\u9053\u9898\u7684\u9898\u89e3\u8fd8\u662f\u8981\u597d\u597d\u5199\u7684 \uff0c\u5475\u5475\u3002\u3002\u3002 \n*\/\n \n \n \n \n\/*\n\u7528c(i,j)\u8868\u793a\u5c06\u5b57\u4e32ai a(i+1) ... aj\u53d8\u6210\u56de\u6587\u8bcd\u7684\u6700\u5c0f\u6dfb\u52a0\u5b57\u6570\n\u5219\u6b64\u95ee\u9898\u5c31\u662f\u8981\u6c42c(1,n)\n\u5148\u6765\u770b\u770bc(1,10)\n\u4e00:\u5982\u679ca1=a10\u5219c(1,10)=c(2,9)\n\u4e8c:\u5982\u679ca1!=a10\u5219\u5c06a1...a10\u53d8\u6210\u56de\u6587\u8bcd\u65e0\u975e\u53ea\u6709\u4e24\u79cd\u60c5\u51b5:\n1:\u5148\u5c06a1,a9\u53d8\u6210\u56de\u6587\u8bcd\u518d\u5728\u4e24\u5934\u52a0\u4e0aa10\n2:\u5148\u5c06a2,a10\u53d8\u6210\u56de\u6587\u8bcd\u518d\u5728\u4e24\u5934\u52a0\u4e0aa1\n\u5373c(1,10)=c(1,9)+1\u6216c(1,10)=c(2,10)+1\n\u800c\u8981\u6c42\u7684\u662f\u6700\u77ed\u7684\u8fc7\u8981\u52a0\u4e0a\u4e24\u79cd\u65b9\u6cd5\u6c42\u5f97\u7684\u8f83\u5c0f\u7684\u90a3\u4e2a \n*\/ \n \n \n \n \n#define LOCAL\n#include&lt;iostream>\n#include&lt;string>     \/\/\u5c11\u5199\u4e86\u5934\u6587\u4ef6\uff0cCE\u4e86\u4e24\u6b21\u3002\u3002\u3002 \n#include&lt;cstdlib>\n#define N 5001\nusing namespace std;\nshort dp&#91;N]&#91;N];        \/\/\u7528short \nshort max(short a,short b)\n{return a>b?b:a;}\nint main()\n{\n#ifdef LOCAL\n       freopen(\"input.txt\",\"r\",stdin);\n       freopen(\"output.txt\",\"w\",stdout);\n#endif\n    \n    \n    int n,i,j;\n    string a;\n    while(cin>>n)\n    {\n           memset(dp,0,sizeof(dp));\/\/\u521d\u59cb\u5316 \n           cin>>a;\n           for(i=n-1;i>=0;i--)\n           {\n                    for(j=i+1;j&lt;n;j++)\n                    {\n                           if(a&#91;i]==a&#91;j])   \/\/\u76f8\u7b49\u4e86\u5c31\u4e0d\u7528\u52a0\u4e86 \n                                 dp&#91;i]&#91;j]=dp&#91;i+1]&#91;j-1];\n                           else\n                                 dp&#91;i]&#91;j]=min(dp&#91;i]&#91;j-1],dp&#91;i+1]&#91;j])+1;\n                                 \/\/\u4e0d\u7b49\u7684\u8bdd\u5148\u628a\u5269\u4e0b\u7684\u53d8\u6210\u56de\u6587\u7136\u540e\u6574\u4f53\u52a0\u4e00\u5373\u53ef \n                    }                   \n           }\n           cout&lt;&lt;dp&#91;0]&#91;n-1]&lt;&lt;endl;\n    }\n    return 0;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-88","post","type-post","status-publish","format-standard","hentry","category-06-01-acm"],"_links":{"self":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/posts\/88","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=88"}],"version-history":[{"count":0,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=\/wp\/v2\/posts\/88\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=88"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=88"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.wangkaixuan.tech\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=88"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}