{"id":1048,"date":"2024-08-08T09:00:00","date_gmt":"2024-08-08T01:00:00","guid":{"rendered":"https:\/\/seanxd.com\/?p=1048"},"modified":"2024-07-05T01:55:04","modified_gmt":"2024-07-04T17:55:04","slug":"zerojudge-a454","status":"publish","type":"post","link":"https:\/\/seanxd.com\/en\/zerojudge-a454\/","title":{"rendered":"ZeroJudge A454: Project Timeline"},"content":{"rendered":"\n\n\n

\u901a\u5e38\u5728\u958b\u767c\u4e00\u500b\u5c08\u6848\u6642\uff0c\u6574\u500b\u5c08\u6848\u6703\u88ab\u5206\u5272\u70ba\u8a31\u591a\u500b\u9805\u76ee\uff0c\u4e26\u540c\u6642\u5206\u914d\u7d66\u591a\u7d44\u7a0b\u5f0f\u8a2d\u8a08\u5e2b\u53bb\u958b\u767c\u3002\u4f46\u9019\u4e9b\u9805\u76ee\u662f\u6709\u9806\u5e8f\u95dc\u4fc2\u7684\uff0c\u53ea\u6709\u7576\u9806\u5e8f\u5728\u524d\u65b9\u7684\u9805\u76ee\u5b8c\u6210\u5f8c\uff0c\u624d\u80fd\u5920\u958b\u59cb\u958b\u767c\u9806\u5e8f\u5728\u5f8c\u65b9\u7684\u9805\u76ee\u3002\u6211\u5011\u5229\u7528\u4e00\u500b\u6709\u5411\u5716\uff0c\u4f86\u8868\u793a\u9019\u4e9b\u9805\u76ee\u7684\u958b\u767c\u9806\u5e8f\u3002\u5716\u4e0a\u7684\u6bcf\u4e00\u500b\u7bc0\u9ede\u4ee3\u8868\u4e00\u500b\u9805\u76ee\uff0c\u7bc0\u9ede\u5167\u7684\u6578\u5b57\u70ba\u7bc0\u9ede\u7de8\u865f\uff0c\u4e0a\u65b9\u7684\u6578\u5b57\u4ee3\u8868\u958b\u767c\u9019\u500b\u9805\u76ee\u6240\u9700\u7684\u5929\u6578\uff1b\u5716\u4e0a\u7684\u908a\u5247\u8868\u793a\u958b\u767c\u7684\u9806\u5e8f\uff0c\u4ee5\u53f3\u5716\u70ba\u4f8b\uff0c\u53ea\u6709\u5728\u7bc0\u9ede 2 \u5b8c\u6210\u5f8c\uff0c\u624d\u80fd\u5920\u958b\u59cb\u7bc0\u9ede 4 \u7684\u958b\u767c\u3002\u53f3\u5716\u70ba\u7bc4\u4f8b\u6e2c\u8a66\u8cc7\u6599\u4e2d\u7684\u7b2c\u4e8c\u7d44\u5c08\u6848\u6709\u5411\u5716\u3002<\/p>\n\n\n\n

\"ZeroJudge<\/figure>\n\n\n\n

\u6709\u4e00\u9593\u8edf\u9ad4\u516c\u53f8\u76ee\u524d\u6b63\u6709\u8a31\u591a\u7684\u5c08\u6848\u6e96\u5099\u958b\u59cb\u958b\u767c\uff0c\u4f46\u662f\u9019\u9593\u516c\u53f8\u7684\u524d\u4e00\u4efb\u5c08\u6848\u7ba1\u7406\u4eba (PM) \u56e0\u4e0d\u582a\u58d3\u529b\u96e2\u8077\u4e86\uff0c\u5728\u81e8\u8d70\u4e4b\u524d\u4ed6\u7559\u4e0b\u4e86\u7576\u521d\u521d\u7565\u756b\u51fa\u7684\u958b\u767c\u6d41\u7a0b\u5716\u3002\u73fe\u5728\u4f60\u662f\u9019\u9593\u516c\u53f8\u65b0\u9032\u7684\u5c08\u6848\u7ba1\u7406\u4eba\uff0c\u800c\u4f60\u7684\u8001\u95c6\u6b63\u8feb\u5207\u7684\u60f3\u77e5\u9053\u9019\u4e9b\u5c08\u6848\u80fd\u4e0d\u80fd\u5728\u4ed6\u6240\u9650\u5236\u7684\u6642\u9593\u5167\u5b8c\u5de5\uff0c\u8acb\u4f60\u5beb\u4e00\u500b\u7a0b\u5f0f\u4f9d\u7167\u9019\u4e9b\u5c08\u6848\u7684\u958b\u767c\u6d41\u7a0b\u5716\u56de\u7b54\u8001\u95c6\u7684\u554f\u984c\u3002<\/p>\n\n\n\n

\u7bc4\u4f8b\u6e2c\u8cc7<\/h2>\n\n\n\n
\u7bc4\u4f8b\u8f38\u5165<\/th>\u7bc4\u4f8b\u8f38\u51fa<\/th><\/tr><\/thead>
\u8f38\u5165\u7684\u7b2c\u4e00\u884c\u6709\u4e00\u500b\u6574\u6578\uff0c\u4ee3\u8868\u5f8c\u7e8c\u6e2c\u8a66\u8cc7\u6599\u7d44\u6578\u3002\u6bcf\u7d44\u6e2c\u8a66\u8cc7\u6599\u4ee3\u8868\u4e00\u500b\u5c08\u6848\u7684\u6709\u5411\u5716\uff0c\u5728\u6bcf\u7d44\u6e2c\u8a66\u8cc7\u6599\u7684\u7b2c\u4e00\u884c\u6709\u4e00\u500b\u6b63\u6574\u6578N\uff0c\u4ee3\u8868\u9019\u500b\u5c08\u6848\u5171\u6709 N \u500b\u5de5\u4f5c\u4e8b\u9805\uff08\u7bc0\u9ede\uff09\uff0cN <= 1000\u3002\u63a5\u4e0b\u4f86\u6709 N \u884c\u6e2c\u8a66\u8cc7\u6599\uff0c\u6bcf\u4e00\u884c\u4f9d\u5e8f\u4ee3\u8868\u4e00\u500b\u9805\u76ee\u7bc0\u9ede (\u5f9e 1 \u958b\u59cb)\uff0c\u7b2c\u4e00\u500b\u6b63\u6574\u6578\u8868\u793a\u5b8c\u6210\u9019\u500b\u9805\u76ee\u6240\u9700\u7684\u5929\u6578\uff0c\u7b2c\u4e8c\u500b\u6b63\u6574\u6578 K \u8868\u793a\u9019\u500b\u7bc0\u9ede\u6709 K \u689d\u6307\u5411\u5176\u4ed6\u7bc0\u9ede\u7684\u908a\uff0c\u63a5\u4e0b\u4f86 K \u500b\u6b63\u6574\u6578\u8868\u793a\u6240\u6307\u5411\u7684\u9805\u76ee\u7bc0\u9ede\u7de8\u865f\u3002

\u8a3b\uff1a\u5c08\u6848\u7684\u6709\u5411\u5716\u4e0d\u4e00\u5b9a\u90fd\u6703\u662f\u9023\u7d50\u5728\u4e00\u8d77\u7684\u3002<\/td>		\u5c0d\u65bc\u6bcf\u7d44\u6e2c\u8a66\u8cc7\u6599\u8f38\u51fa\u5b8c\u6210\u8a72\u5c08\u6848\u6240\u9700\u7684\u6700\u5c11\u5929\u6578\u3002<\/td><\/tr>
2
2
8 1 2
2 0
5
6 2 2 3
5 1 4
11 1 5
4 1 5
8 0<\/td>		10
25<\/td><\/tr><\/tbody><\/table>
ZeroJudge A454 \u7bc4\u4f8b\u6e2c\u8cc7<\/figcaption><\/figure>\n\n\n\n

\u89e3\u984c\u601d\u8def<\/h2>\n\n\n\n

\u5c07\u6bcf\u500b\u7bc0\u9ede\u7684\u8017\u8cbb\u5929\u6578\u3001\u524d\u9762\u7684\u5168\u90e8\u7bc0\u9ede\u3001\u5f8c\u9762\u7684\u5168\u90e8\u7bc0\u9ede\u5b58\u8d77\u4f86\uff0c\u4e26\u4e14\u5ba3\u544a\u4e00\u500b answer \u8b8a\u6578\u9810\u8a2d\u70ba 0\u3002<\/p>\n\n\n\n

\u4f7f\u7528 DFS\uff0c\u9700\u8981\u7684\u53c3\u6578\u6709\u76ee\u524d\u7684\u7bc0\u9ede\u4f4d\u7f6e\u9084\u6709\u4e00\u500b\u6574\u6578 weight \u4ee3\u8868\u76ee\u524d\u52a0\u8d77\u4f86\u6240\u8017\u8cbb\u7684\u5929\u6578\u3002\u6bcf\u6b21\u9032 DFS \u6642\u90fd\u8981\u5c07 weight += \u76ee\u524d\u7bc0\u9ede\u7684\u8017\u8cbb\u5929\u6578\uff0c\u4e26\u4e14\u8981\u5ba3\u544a\u4e00\u500b Map<int, int> ans \u4f86\u5b58\u6bcf\u500b\u7bc0\u9ede\u7684\u6700\u5927\u8017\u8cbb\u5929\u6578\uff0c\u6bcf\u6b21\u90fd\u8981\u66f4\u65b0 ans[\u76ee\u524d\u7bc0\u9ede]\uff0c\u770b\u662f ans[\u76ee\u524d\u7bc0\u9ede] \u6bd4\u8f03\u5927\u9084\u662f weight\uff0c\u66f4\u65b0\u503c\u70ba\u8f03\u5927\u8005\u3002\u7136\u5f8c\uff0c\u9084\u8981\u66f4\u65b0 answer \u8b8a\u6578\u81f3\u6700\u5927\u503c\uff0c\u548c ans[\u76ee\u524d\u7bc0\u9ede] \u6bd4\u8f03\u3002<\/p>\n\n\n\n

\u8dd1\u4e00\u500b For\u8ff4\u5708 \u5c07\u76ee\u524d\u7bc0\u9ede\u7684\u6240\u6709\u300c\u5f8c\u9762\u7684\u7bc0\u9ede\u300d\u9032\u884c\u5224\u65b7\uff0c\u5982\u679c\u6709\u7bc0\u9ede\u53ef\u4ee5\u8d70\uff0c\u4ea6\u4ee3\u8868\u5176\u7bc0\u9ede\u524d\u9762\u7684\u9ede\u90fd\u8d70\u904e\u4e86\uff0c\u5c31\u53ef\u4ee5\u518d\u547c\u53eb\u65b0\u7684 DFS\u3002\u9019\u908a\u53ef\u4ee5\u518d\u5ba3\u544a\u4e00\u500b Map<int, int> \u4f86\u5224\u65b7\u54ea\u4e9b\u7684\u9ede\u5df2\u7d93\u8d70\u904e\u4e86\u3002<\/p>\n\n\n\n

\u56e0\u70ba\u6709\u53ef\u80fd\u6703\u6709\u591a\u500b\u5716\u7684\u60c5\u6cc1\uff0c\u6240\u4ee5\u547c\u53eb DFS \u662f\u8981\u7528 For\u8ff4\u5708 \u5c07\u6bcf\u500b\u7bc0\u9ede\u505a\u5224\u65b7\u518d\u4f86\u547c\u53eb DFS\uff0c\u5982\u679c\u8dd1\u5230\u7684\u7bc0\u9ede\u662f\u8d77\u9ede\uff0c\u4ea6\u4ee3\u8868\u5176\u524d\u9762\u6c92\u6709\u4efb\u4f55\u7bc0\u9ede\uff0c\u5c31\u4f7f\u7528\u76ee\u524d\u9019\u500b\u7bc0\u9ede\u4f86\u547c\u53eb DFS\u3002<\/p>\n\n\n\n

\u6700\u5f8c\u8981\u8f38\u51fa\u7684\u6578\u503c\u70ba answer \u8b8a\u6578\u3002<\/p>\n\n\n\n

\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff0dZeroJudge A454: \u5c08\u6848\u6642\u7a0b<\/a><\/h3>\n\n\n\n
#include <iostream>\n#include <vector>\n#include <map>\nusing namespace std;\n\nvector<int>Day;\nvector<vector<int>>go;\nmap<int, vector<int>>MAP;\nmap<int, int>walk, ans;\nint answer = 0;\n\nvoid DFS(const int pos, int weight) {\n    const vector<int>destinations = go[pos];\n    weight += Day[pos];\n    ans[pos] = max(ans[pos], weight);\n    answer = max(ans[pos], answer);\n    for (int i = 0; i<destinations.size(); i++) {\n        const int current = destinations[i];\n        const vector<int> condition = MAP[current];\n        bool ok = true;\n        int mm = -1;\n        walk[current]++;\n        if (walk[current] < condition.size()) continue;\n        for (int point : condition) {\n            mm = max(mm,ans[point]);\n        }\n        DFS(current, mm);\n    }\n}\n\nint main() {\n    cin.sync_with_stdio(0);\n    cin.tie(0);\n    int T;\n    cin >> T;\n    for (int i = 0; i<T; i++) {\n        Day.clear();\n        go.clear();\n        MAP.clear();\n        walk.clear();\n        ans.clear();\n        answer = 0;\n        int N;\n        cin >> N;\n        for (int j = 0; j<N; j++) {\n            int day, K;\n            cin >> day >> K;\n            Day.push_back(day);\n            vector<int>hi;\n            for (int k = 0; k<K; k++) {\n                int tmp;\n                cin >> tmp;\n                tmp--;\n                MAP[tmp].push_back(j);\n                hi.push_back(tmp);\n            }\n            go.push_back(hi);\n        }\n        for(int j = 0; j < N; j++) {\n            if (MAP[j].empty()) DFS(j, 0);\n        }\n        cout << answer << "\\n";\n    }\n}\n\n\/\/ZeroJudge A454\n\/\/Dr. SeanXD<\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"
\u901a\u5e38\u5728\u958b\u767c\u4e00\u500b\u5c08\u6848\u6642\uff0c\u6574\u500b\u5c08\u6848\u6703\u88ab\u5206\u5272\u70ba\u8a31\u591a\u500b\u9805\u76ee\uff0c\u4e26\u540c\u6642\u5206\u914d\u7d66\u591a\u7d44\u7a0b\u5f0f\u8a2d\u8a08\u5e2b\u53bb\u958b\u767c\u3002\u4f46\u9019\u4e9b\u9805\u76ee\u662f\u6709\u9806\u5e8f\u95dc\u4fc2\u7684 […]<\/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":[25],"tags":[21,14,20,22,8,9],"class_list":["post-1048","post","type-post","status-publish","format-standard","hentry","category-ioi-apcs","tag-dfs","tag-map","tag-20","tag-22","tag-8","tag-9"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/posts\/1048","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=1048"}],"version-history":[{"count":2,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/posts\/1048\/revisions"}],"predecessor-version":[{"id":1052,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/posts\/1048\/revisions\/1052"}],"wp:attachment":[{"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/media?parent=1048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/categories?post=1048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/tags?post=1048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}