{"id":179,"date":"2024-04-26T16:34:24","date_gmt":"2024-04-26T08:34:24","guid":{"rendered":"https:\/\/seanxd.com\/?p=179"},"modified":"2024-04-26T16:34:26","modified_gmt":"2024-04-26T08:34:26","slug":"zerojudge-d786","status":"publish","type":"post","link":"https:\/\/seanxd.com\/en\/zerojudge-d786\/","title":{"rendered":"ZeroJudge D786: Average"},"content":{"rendered":"\n\n\n<p class=\"\">\u5df2\u77e5 N \u500b\u5143\u7d20\u7684\u6574\u6578\u6578\u5217\uff0c\u8a08\u7b97\u51fa\u9019\u7d44\u6578\u5217\u7684\u5e73\u5747\u503c\uff0c\u56db\u6368\u4e94\u5165\u81f3\u5c0f\u6578\u7b2c2\u4f4d\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7bc4\u4f8b\u6e2c\u8cc7<\/h2>\n\n\n\n<figure class=\"wp-block-table nfd-wb-animate nfd-wb-fade-in-bottom-short\"><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\u7684\u6578\u5b57\uff0c\u4ee3\u8868\u6709\u5e7e\u7d44\u6e2c\u8a66\u8cc7\u6599\uff0c\u7b2c\u4e8c\u884c\u958b\u59cb\u7684\u6bcf\u4e00\u884c\u5373\u70ba\u4e00\u7b46\u6e2c\u8a66\u8cc7\u6599\u3002<br>\u6bcf\u4e00\u7b46\u6e2c\u8a66\u8cc7\u6599\u4ee5\u7a7a\u683c\u5206\u958b\u6578\u5b57\uff1a<br>\u7b2c\u4e00\u500b\u6574\u6578\u70ba\u6578\u5217\u9577\u5ea6 <strong>N<\/strong>\uff0c\u5176\u7bc4\u570d\u70ba [1, 100]\u7684\u6574\u6578\uff1b<br>\u63a5\u4e0b\u4f86\u7684<strong> N<\/strong> \u500b\u6574\u6578\uff0c\u5176\u7bc4\u570d\u70ba [-10000,  10000] \u7684\u6574\u6578\u3002<\/td><td>\u5c0d\u6bcf\u4e00\u7b46\u6e2c\u8a66\u8cc7\u6599\uff0c\u4ee5\u4e00\u884c<strong>\u8f38\u51fa\u5e73\u5747\u6578<\/strong>\uff0c\u4e26<strong>\u56db\u6368\u4e94\u5165\u81f3\u5c0f\u6578\u7b2c 2 \u4f4d<\/strong>\u3002<\/td><\/tr><tr><td>2<br><strong>5<\/strong>  2  4  6  8  10<br><strong>3<\/strong>  52  30  61<\/td><td>6.00<br>47.67<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u984c\u601d\u8def<\/h2>\n\n\n\n<p class=\"\">\u4f7f\u7528 <strong>For\u8ff4\u5708<\/strong> \u5c07\u6578\u5b57\u90fd\u52a0\u5230\u4e00\u500b\u8b8a\u6578\u4e2d\uff0c\u518d\u628a <strong>sum\/N <\/strong>\u7684\u503c\u5b58\u5230\u4e00\u500b <strong>double<\/strong> \u8b8a\u6578\u4e2d\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<strong>sum<\/strong> \u548c <strong>N<\/strong> \u9019\u5169\u500b\u8b8a\u6578\u53ef\u4ee5\u4f7f\u7528 <strong>double \u4f86\u5ba3\u544a<\/strong>\u9019\u6a23\u5b50\u5c31\u4e0d\u9700\u8981\u5728\u8a08\u7b97\u5e73\u5747\u503c\u6642\u505a\u8f49\u578b\u7684\u52d5\u4f5c\u3002\u8a08\u7b97\u5b8c\u4e4b\u5f8c\u53ef\u4ee5\u4f7f\u7528 <strong>printf(%.2f\\n, ans)<\/strong> \u4f86\u505a\u56db\u6368\u4e94\u5165\u5230\u7b2c\u4e8c\u4f4d\u7684\u8f38\u51fa\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff0d<a href=\"https:\/\/zerojudge.tw\/ShowProblem?problemid=d786\" target=\"_blank\" rel=\"noreferrer noopener\">ZeroJudge D786: \u5e73\u5747\u503c<\/a><\/h3>\n\n\n\n<div class=\"hcb_wrap nfd-wb-animate nfd-wb-reveal-right nfd-delay-50\"><pre class=\"prism line-numbers lang-cpp\" data-lang=\"C++\"><code>#include &lt;iostream&gt;\n#include &lt;stdio.h&gt;\nusing namespace std;\n\nint main() {\n    cin.sync_with_stdio(0);\n    cin.tie(0);\n    int N;\n    cin &gt;&gt; N;\n    for (int i = 0; i&lt;N; i++)\n    {\n        double M;\n        cin &gt;&gt; M;\n        double sum = 0;\n        for (int j = 0; j&lt;M; j++)\n        {\n            double tmp;\n            cin &gt;&gt; tmp;\n            sum += tmp;\n        }\n        double ans = sum\/M;\n        printf(&quot;%.2f\\n&quot;, ans);\n    }\n}\n\n\/\/ZeroJudge D786\n\/\/Dr. SeanXD<\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5df2\u77e5 N \u500b\u5143\u7d20\u7684\u6574\u6578\u6578\u5217\uff0c\u8a08\u7b97\u51fa\u9019\u7d44\u6578\u5217\u7684\u5e73\u5747\u503c\uff0c\u56db\u6368\u4e94\u5165\u81f3\u5c0f\u6578\u7b2c2\u4f4d\u3002 \u7bc4\u4f8b\u6e2c\u8cc7 \u7bc4\u4f8b\u8f38\u5165 \u7bc4\u4f8b\u8f38\u51fa \u7b2c\u4e00 [&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":[13,7,9],"class_list":["post-179","post","type-post","status-publish","format-standard","hentry","category-zerojudge-","tag-13","tag-7","tag-9"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/posts\/179","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/comments?post=179"}],"version-history":[{"count":1,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/posts\/179\/revisions"}],"predecessor-version":[{"id":180,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/posts\/179\/revisions\/180"}],"wp:attachment":[{"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/media?parent=179"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/categories?post=179"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/tags?post=179"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}