{"id":246,"date":"2012-11-08T07:35:00","date_gmt":"2012-11-07T23:35:00","guid":{"rendered":"http:\/\/nike0good.jp1.rpvhost.net\/151"},"modified":"2012-11-08T07:35:00","modified_gmt":"2012-11-07T23:35:00","slug":"tyvj_q1024_double_use","status":"publish","type":"post","link":"https:\/\/nike0good.com\/?p=246","title":{"rendered":"Tyvj Q1024(double\u7684\u4f7f\u7528\uff09"},"content":{"rendered":"<p>\u5728C&#43;&#43;\u4e2d double\u4f1a\u4ee5\u727a\u7272\u6700\u5c0f\u6570\u4e3a\u4ee3\u4ef7\u6362\u53d6\u9ad8\u4f4d<\/p>\n<p>\u53e6\u5916\u8bf7\u770b\u597d\u9898\u76ee\u662f\u6c42\u6574\u6570\u90e8\u5206\u8fd8\u662f\u56db\u820d\u4e94\u5165<\/p>\n<p>\n<\/p>\n<\/p>\n<pre name=\"code\" class=\"cpp\">#include&lt;cstdio&gt;\n#include&lt;cstring&gt;\n#include&lt;cstdlib&gt;\n#include&lt;cmath&gt;\n#include&lt;cctype&gt;\n#include&lt;iostream&gt;\n#include&lt;functional&gt;\n#include&lt;algorithm&gt;\n#include&lt;string&gt;\nusing namespace std;\n#define MAXN (1000+10)\nint a[MAXN][MAXN],n;\nint main()\n{\n\tlong double ans=0.0;\n\tscanf(&quot;%d&quot;,&amp;n);\n\tlong long all=0;\n\tfor (int i=1;i&lt;=n;i++)\n\t{\n\t\tfor (int j=1;j&lt;=n;j++)\n\t\t\tall+=((long long)n-i+1)*((long long)n-j+1);\n\t}\n\n\tfor (int i=1;i&lt;=n;i++)\n\t\tfor (int j=1;j&lt;=n;j++)\n\t{\n\t\tscanf(&quot;%d&quot;,&amp;a[i][j]);\n\t\tans+=(long double)(a[i][j])*(long double)(n-i+1)*(long double)(n-j+1)*(long double)(i*j);\n\n\t\/\/\tcout&lt;&lt;ans&lt;&lt;' ';\n\t}\n\n\tcout.setf(ios::fixed);\n\tcout.precision(0);\n\tcout&lt;&lt;trunc(ans\/(long double)(all))&lt;&lt;endl;\n\n\n\n\treturn 0;\n}\n<\/pre><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728C&#43;&#43;\u4e2d double\u4f1a\u4ee5\u727a\u7272\u6700\u5c0f\u6570\u4e3a\u4ee3\u4ef7\u6362\u53d6\u9ad8\u4f4d \u53e6\u5916\u8bf7\u770b\u597d\u9898\u76ee\u662f\u6c42\u6574\u6570\u90e8\u5206\u8fd8\u662f\u56db\u820d\u4e94\u5165  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","footnotes":""},"categories":[3],"tags":[29,30],"class_list":["post-246","post","type-post","status-publish","format-standard","hentry","category-defaultcategory","tag-c","tag-dp"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - 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