{"id":601,"date":"2023-03-11T15:49:57","date_gmt":"2023-03-11T07:49:57","guid":{"rendered":"https:\/\/lolife.top\/?p=601"},"modified":"2023-03-11T15:49:58","modified_gmt":"2023-03-11T07:49:58","slug":"%e4%ba%8c%e7%bb%b4%e5%89%8d%e7%bc%80%e5%92%8c%e6%a8%a1%e6%9d%bf","status":"publish","type":"post","link":"https:\/\/lolife.top\/?p=601","title":{"rendered":"\u4e8c\u7ef4\u524d\u7f00\u548c\u6a21\u677f"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>#include &lt;iostream>\nusing namespace std;\nint n, m;\nint a&#91;105]&#91;105], sum&#91;105]&#91;105];\nint main()\n{\n\tcin >> n >> m;\n\tfor (int i = 1; i &lt;= n; i++) {\n\t\tfor (int j = 1; j &lt;= m; j++) {\n\t\t\tcin >> a&#91;i]&#91;j];\n\t\t\tsum&#91;i]&#91;j] = sum&#91;i - 1]&#91;j] + sum&#91;i]&#91;j - 1] - sum&#91;i - 1]&#91;j - 1] + a&#91;i]&#91;j];\n\t\t}\n\t}\n\t\/\/\u8ba1\u7b97\u5de6\u4e0a\u9876\u70b9(x1,y1)\u5230\u53f3\u4e0b\u9876\u70b9(x2,y2)\u77e9\u5f62\u7684\u9762\u79ef\n\tint ans = sum&#91;x2]&#91;y2] - sum&#91;x1 - 1]&#91;y2] - sum&#91;x2]&#91;y1 - 1] + sum&#91;x1 - 1]&#91;y1 - 1];\n\t\t\t\n\t\t\n\t\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12,20],"tags":[19],"class_list":["post-601","post","type-post","status-publish","format-standard","hentry","category-c-c","category-20","tag-19"],"_links":{"self":[{"href":"https:\/\/lolife.top\/index.php?rest_route=\/wp\/v2\/posts\/601","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lolife.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lolife.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lolife.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lolife.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=601"}],"version-history":[{"count":1,"href":"https:\/\/lolife.top\/index.php?rest_route=\/wp\/v2\/posts\/601\/revisions"}],"predecessor-version":[{"id":602,"href":"https:\/\/lolife.top\/index.php?rest_route=\/wp\/v2\/posts\/601\/revisions\/602"}],"wp:attachment":[{"href":"https:\/\/lolife.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=601"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lolife.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=601"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lolife.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=601"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}