{"id":501,"date":"2024-05-23T09:00:00","date_gmt":"2024-05-23T01:00:00","guid":{"rendered":"https:\/\/seanxd.com\/?p=501"},"modified":"2024-05-04T20:52:27","modified_gmt":"2024-05-04T12:52:27","slug":"zerojudge-d406","status":"publish","type":"post","link":"https:\/\/seanxd.com\/en\/zerojudge-d406\/","title":{"rendered":"ZeroJudge D406: Flowing Water"},"content":{"rendered":"\n\n\n

\u6c34\u7531\u4e0a\u800c\u4e0b\u7684\u6d41\uff0c\u73fe\u5728\u7d66\u4f60\u6c34\u7ba1\u4e4b\u9593\u7684\u5730\u5716
\u6c34\u53ef\u4ee5\u7531\u4e0a\u800c\u4e0b\uff0c\u53ef\u4ee5\u5f80\u53f3\u6d41\uff0c\u5f80\u5de6\u6d41\u3002<\/p>\n\n\n\n

\u53ef\u662f\u5462 \u2026 \u6709\u6642\u5019\u4e5f\u53ef\u4ee5\u5f80\u4e0a\u6d41
\u73fe\u5728\u5f9e\u5730\u5716\u7684\u6700\u4e0a\u65b9\u958b\u59cb\u5012\u6c34\uff0c\u8acb\u8f38\u51fa\u5230\u7684\u6642\u9593\u3002<\/p>\n\n\n\n

\u203b \u958b\u59cb\u5012\u7684\u5730\u65b9\u53ea\u6709 1 \u500b\u4e14\u53ea\u5728\u7b2c\u4e00\u5217\u5012<\/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>
EOF<\/strong> \u8f38\u5165\uff0c\u6bcf\u7d44\u6e2c\u8cc7\u7684\u7b2c\u4e00\u5217\u6709\u4e00\u500b\u6578\u5b57 S\uff0c\u82e5 S = 2 \u4ee3\u8868\u6c34\u4e0d\u80fd\u5f80\u4e0a\u6d41\uff0c S = 1 \u4ee3\u8868\u6c34\u53ef\u4ee5\u5f80\u4e0a\u6d41<\/strong>\u3002
\u7b2c\u4e8c\u5217\u6709\u5169\u500b\u6578\u5b57 N \u548c M\uff0c N \u4ee3\u8868\u63a5\u4e0b\u4f86\u6709 N \u5217\uff0cM\u4ee3\u8868\u6bcf\u5217\u4e0a\u6709\u591a\u5c11\u6578\u5b57\u3002
( 1\u2266 N\u3001M \u2266 100 )
\u63a5\u4e0b\u4f86\u6703\u6709 N \u5217\uff0c\u6bcf\u5217\u4e0a\u6709 M \u500b\u6578\u5b57\uff0c 1 \u4ee3\u8868\u6709\u6c34\u7ba1\uff0c 0 \u5247\u4ee3\u8868\u6c92\u6709\u3002<\/td>		\u5c0d\u6bcf\u500b\u5730\u9ede\u8f38\u51fa\u5230\u7684\u6642\u9593\u3002<\/td><\/tr>
1
4 6
0 0 0 1 0 0
0 0 1 1 1 0
1 1 1 0 1 0
0 1 0 0 0 0
1
5 7
1 0 0 0 0 0 0
1 1 1 1 1 1 0
0 1 0 0 1 0 1
1 1 1 0 1 1 1
1 0 1 0 1 1 1
2
6 6
0 1 0 0 0 0
1 1 0 0 1 1
0 1 1 1 1 0
1 1 1 1 1 1
0 0 0 0 1 0
0 0 0 1 1 0<\/td>		Case 1:
0 0 0 1 0 0
0 0 3 2 3 0
6 5 4 0 4 0
0 6 0 0 0 0
Case 2:
1 0 0 0 0 0 0
2 3 4 5 6 7 0
0 4 0 0 7 0 11
6 5 6 0 8 9 10
7 0 7 0 9 10 11
Case 3:
0 1 0 0 0 0
3 2 0 0 0 0
0 3 4 5 6 0
5 4 5 6 7 8
0 0 0 0 8 0
0 0 0 10 9 0<\/td><\/tr><\/tbody><\/table>
ZeroJudge D406 \u7bc4\u4f8b\u6e2c\u8cc7<\/figcaption><\/figure>\n\n\n\n

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

\u5ba3\u544a\u4e00\u500b Vector<Vector<int>>ans \u4e26\u4e14\u5c07\u6240\u6709\u6578\u503c\u9810\u8a2d\u70ba 0<\/strong>\uff0c\u4f7f\u7528 BFS\uff0c\u56de\u50b3\u7684\u8cc7\u6599\u53ef\u4ee5\u65b0\u589e\u4e00\u500b Count \u7684\u8b8a\u6578\uff0c\u4ee3\u8868\u6642\u9593\uff0c\u6bcf\u6b21\u8dd1\u5230\u67d0\u4e00\u500b\u9ede\u7684\u6642\u5019\u5c31\u5c07\u76ee\u524d\u7684 Count \u8a2d\u5b9a\u5728\u76ee\u524d\u8d70\u9053\u7684\u9ede\u7684ans\u4e2d<\/strong>\u3002\u6bcf\u4e00\u6b21\u91cd\u65b0\u547c\u53eb BFS \u6642 Count \u90fd\u8981 +1<\/strong>\u3002<\/p>\n\n\n\n

\u8d70\u904e\u7684\u9ede\u5c31\u4e0d\u80fd\u518d\u8d70\u4e86<\/strong>\uff0c\u53ef\u4ee5\u4f7f\u7528 Map \u4f86\u78ba\u8a8d\u4e0b\u6b21\u7684\u8d77\u9ede\u662f\u5426\u6709\u88ab\u8d70\u904e\u3002<\/p>\n\n\n\n

\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff0dZeroJudge D406: \u5012\u6c34\u6642\u9593<\/a><\/h3>\n\n\n\n
#include <iostream>\n#include <vector>\n#include <map>\nusing namespace std;\n\nint S, N, M, locsize = 3;\nvector<vector<int>>water, ans;\nvector<pair<int, int>>loc;\n\npair<int, int> axis (int a, int b)\n{\n    pair<int, int>tmp;\n    tmp.first = a;\n    tmp.second = b;\n    return tmp;\n}\n\nvoid BFS(vector<pair<int, int>>start, map<pair<int, int>, int>MAP, int count)\n{\n    if (start.size() == 0) return;\n    vector<pair<int, int>>newStart;\n    for (int i = 0; i<start.size(); i++)\n    {\n        int y = start[i].first, x = start[i].second;\n        ans[y][x] = count;\n        MAP[start[i]]++;\n        for (int j = 0; j<locsize; j++)\n        {\n            int yy = y + loc[j].first, xx = x + loc[j].second;\n            if (yy >= 0 && yy < N && xx >= 0 && xx < M && water[yy][xx] == 1 && MAP[axis(yy, xx)] == 0) newStart.push_back(axis(yy, xx));\n        }\n    }\n    BFS(newStart, MAP, count+1);\n}\n\nint main() {\n    cin.sync_with_stdio(0);\n    cin.tie(0);\n    int count = 1;\n    while (cin >> S >> N >> M)\n    {\n        loc.clear();\n        loc.push_back(axis(1, 0));\n        loc.push_back(axis(0, 1));\n        loc.push_back(axis(0, -1));\n        locsize = 3;\n        water.clear();\n        ans.clear();\n        vector<pair<int, int>>start;\n        for (int i = 0; i<N; i++)\n        {\n            vector<int>v;\n            vector<int>hi;\n            for (int j = 0; j<M; j++)\n            {\n                int tmp;\n                cin >> tmp;\n                if (i == 0 && tmp == 1) start.push_back(axis(i, j));\n                v.push_back(tmp);\n                hi.push_back(0);\n            }\n            water.push_back(v);\n            ans.push_back(hi);\n        }\n        if (S == 1)\n        {\n            loc.push_back(axis(-1, 0));\n            locsize++;\n        }\n        map<pair<int, int>, int>MAP;\n        BFS(start, MAP, 1);\n        cout << "Case " << count << ":\\n";\n        for (int i = 0; i<N; i++)\n        {\n            for (int j = 0; j<M; j++)\n            {\n                cout << ans[i][j] << " ";\n            }\n            cout << "\\n";\n        }\n        count++;\n    }\n}\n\n\/\/ZeroJudge D406\n\/\/Dr. SeanXD<\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"
\u6c34\u7531\u4e0a\u800c\u4e0b\u7684\u6d41\uff0c\u73fe\u5728\u7d66\u4f60\u6c34\u7ba1\u4e4b\u9593\u7684\u5730\u5716\u6c34\u53ef\u4ee5\u7531\u4e0a\u800c\u4e0b\uff0c\u53ef\u4ee5\u5f80\u53f3\u6d41\uff0c\u5f80\u5de6\u6d41\u3002 \u53ef\u662f\u5462 \u2026 \u6709\u6642\u5019\u4e5f\u53ef\u4ee5\u5f80\u4e0a\u6d41\u73fe\u5728 […]<\/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":[30,14,23,22,8,9],"class_list":["post-501","post","type-post","status-publish","format-standard","hentry","category-zerojudge-","tag-bfs","tag-map","tag-pair","tag-22","tag-8","tag-9"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/posts\/501","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=501"}],"version-history":[{"count":2,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/posts\/501\/revisions"}],"predecessor-version":[{"id":503,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/posts\/501\/revisions\/503"}],"wp:attachment":[{"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/media?parent=501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/categories?post=501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seanxd.com\/en\/wp-json\/wp\/v2\/tags?post=501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}