{"id":655,"date":"2024-07-09T09:00:00","date_gmt":"2024-07-09T01:00:00","guid":{"rendered":"https:\/\/seanxd.com\/?p=655"},"modified":"2024-05-31T00:08:52","modified_gmt":"2024-05-30T16:08:52","slug":"zerojudge-d563","status":"publish","type":"post","link":"https:\/\/seanxd.com\/zh\/zerojudge-d563\/","title":{"rendered":"ZeroJudge D563: \u7b49\u503c\u9996\u5c3e\u548c"},"content":{"rendered":"\n\n\n<p class=\"\">\u5047\u8a2d\u6709\u4e00\u500b\u9663\u5217 x[]\uff0c\u5b83\u6709 N \u500b\u5143\u7d20\uff0c\u6bcf\u4e00\u500b\u90fd\u5927\u65bc\u96f6\uff1b\u6211\u5011\u8aaa x[0] + x[1] + \u2026 + x[i] \u662f\u500b\u524d\u6bb5\u548c (Prefix Sum)\uff0c\u800c x[j] + x[j+1] + \u2026 + x[n-1] \u5247\u662f\u500b\u5f8c\u6bb5\u548c (Suffix Sum)\u3002\u8acb\u5beb\u4e00\u500b\u7a0b\u5f0f\uff0c\u6c42\u51fa x[] \u4e2d\u6709\u591a\u5c11\u7d44\u76f8\u540c\u7684\u524d\u6bb5\u548c\u8207\u5f8c\u6bb5\u548c\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>\u6bcf\u500b\u6e2c\u8cc7\u6a94\u53ea\u6709\u4e00\u7d44\u6e2c\u8cc7\uff0c\u5171\u5169\u884c\u3002<br>\u7b2c\u4e00\u884c\u6574\u6578 N (1 &lt;= N &lt;= 100000) \u4ee3\u8868\u6578\u5217\u6709\u5e7e\u500b\u6578\u5b57\u3002<br>\u7b2c\u4e8c\u884c\u6709 N \u500b\u6b63\u6574\u6578 (A<sub>1<\/sub>, A<sub>2<\/sub>, \u2026, A<sub>N<\/sub>)\uff0c\u4e26\u4e14\u5168\u90e8\u7e3d\u5408\u5c0f\u65bc 2147483647\uff0c\u4ee5\u7a7a\u683c\u9694\u958b<\/td><td>\u7b49\u503c\u9996\u5c3e\u548c\u7684\u6578\u76ee<\/td><\/tr><tr><td>7<br>3 6 2 1 4 5 2<\/td><td>3<\/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=\"\">\u8a08\u7b97\u5de6\u524d\u7db4\u5408\uff0c\u4e26\u4e14\u5c07\u6240\u6709\u5de6\u524d\u7db4\u5408\u8a18\u9304\u5230\u4e00\u500b Map \u4e2d\u3002<\/p>\n\n\n\n<p class=\"\">\u518d\u4f86\u8981\u8a08\u7b97\u53f3\u524d\u7db4\u5408\uff0c\u5982\u679c\u6709\u524d\u7db4\u5408\u5728 Map \u4e2d\u6709\u7d00\u9304\uff0c\u5c31\u4ee3\u8868\u6709\u91cd\u8907\u5c07\u7b54\u6848 +1\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff0d<a href=\"https:\/\/zerojudge.tw\/ShowProblem?problemid=d563\" target=\"_blank\" rel=\"noreferrer noopener\">ZeroJudge D563: \u7b49\u503c\u9996\u5c3e\u548c<\/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;vector&gt;\n#include &lt;map&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    vector&lt;int&gt;num;\n    map&lt;int, int&gt;MAP;\n    int sum = 0;\n    for (int i = 0; i&lt;N; i++) {\n        int tmp;\n        cin &gt;&gt; tmp;\n        num.push_back(tmp);\n        sum += tmp;\n        MAP[sum]++;\n    }\n    sum = 0;\n    int ans = 0;\n    for (int i = N-1; i&gt;=0; i--) {\n        sum += num[i];\n        if (MAP[sum] &gt; 0) ans++;\n    }\n    cout &lt;&lt; ans &lt;&lt; &quot;\\n&quot;;\n}\n\n\/\/ZeroJudge D563\n\/\/Dr. SeanXD<\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5047\u8a2d\u6709\u4e00\u500b\u9663\u5217 x[]\uff0c\u5b83\u6709 N \u500b\u5143\u7d20\uff0c\u6bcf\u4e00\u500b\u90fd\u5927\u65bc\u96f6\uff1b\u6211\u5011\u8aaa x[0] + x[1] + \u2026 + x[i] [&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":[1,6],"tags":[14,20,8,9],"class_list":["post-655","post","type-post","status-publish","format-standard","hentry","category-uncategorized","category-6","tag-map","tag-20","tag-8","tag-9"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/655","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/comments?post=655"}],"version-history":[{"count":1,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/655\/revisions"}],"predecessor-version":[{"id":656,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/655\/revisions\/656"}],"wp:attachment":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/media?parent=655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/categories?post=655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/tags?post=655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}