{"id":875,"date":"2024-07-22T09:00:00","date_gmt":"2024-07-22T01:00:00","guid":{"rendered":"https:\/\/seanxd.com\/?p=875"},"modified":"2024-06-25T17:43:44","modified_gmt":"2024-06-25T09:43:44","slug":"itsa-202405-2","status":"publish","type":"post","link":"https:\/\/seanxd.com\/zh\/itsa-202405-2\/","title":{"rendered":"ITSA 202405 #2\uff1a\u878d\u5408\u5be6\u9a57"},"content":{"rendered":"\n\n\n

\u5c0f\u4f73\u5728\u505a\u5be6\u9a57\u3002\u5979\u60f3\u5c07 4 \u7a2e\u5316\u5b78\u85e5\u5291\u300cA\u3001B\u3001C\u3001D\u300d\u4e2d\uff0c\u52a0\u5165\u300c1\u30012\u30013\u30014\u300d\u7a2e\u5316\u5b78\u7c89\u672b\uff0c\u4ee5\u89c0\u5bdf\u878d\u5408\u5f8c\u7684\u5316\u5b78\u53cd\u61c9\u3002\u4f46\u9019\u4e9b\u5316\u5b78\u85e5\u5291\u4e2d\uff0c\u5404\u5225\u6709\u7d55\u5c0d\u4e0d\u80fd\u52a0\u5165\u7684\u7c89\u672b<\/strong>\uff0c\u5426\u5247\u6703\u767c\u751f\u7206\u70b8\u3002<\/p>\n\n\n\n

\u8acb\u4f60\u5beb\u4e00\u500b\u7a0b\u5f0f\u4f86\u5354\u52a9\u5c0f\u4f73\u5b8c\u6210\u5de5\u4f5c\u3002\u7576\u878d\u5408\u65b9\u5f0f\u4e0d\u53ea\u4e00\u7d44\u6642\uff0c\u8acb\u8f38\u51fa\u6240\u6709\u53ef\u80fd\u7684\u878d\u5408\u65b9\u5f0f (\u7c89\u672a\u4e0d\u6703\u91cd\u8986\u4f7f\u7528\uff09<\/strong>\uff0c\u82e5\u7121\u6cd5\u627e\u51fa\u4e00\u7a2e\u7b26\u5408\u8981\u6c42\u7684\u878d\u5408\u65b9\u5f0f\uff0c\u5247\u5370\u6bd4\u300cNo\u300d<\/strong>\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>
\u7b2c\u4e00\u884c\u70ba\u4e00\u500b\u6b63\u6574\u6578 N (1 \u2264 N \u2264 10\uff09\uff0c\u8868\u793a\u5171\u6709 N \u7b46\u6e2c\u8a66\u8cc7\u6599\u3002
\u6bcf\u7b46\u6e2c\u8a66\u8cc7\u6599\u6709 4 \u884c\uff0c\u6bcf\u884c\u7b2c\u4e00\u500b\u5b57\u5143\u70ba 1 \u500b\u82f1\u6587\u5b57\u6bcd (A\u3001B\u3001C\u3001D) \u8868\u793a\u5316\u5b78\u85e5\u5291\uff0c\u5f8c\u9762\u63a5\u8457\u4e0d\u80fd\u52a0\u5165\u7684\u7c89\u672a\u6578\u5b57 (1\u30012\u30013\u30014\uff09\uff0c\u4ee5\u7a7a\u683c\u683c\u958b\uff0c\u6700\u5f8c\u4ee5 0 \u505a\u70ba\u7d50\u5c3e\u3002
\u82e5\u6c92\u6709\u4e0d\u80fd\u52a0\u5165\u7684\u5316\u5b78\u7c89\u672b\uff0c\u5247\u76f4\u63a5\u4ee5 0 \u7d50\u5c3e\u3002<\/strong><\/td>		\u6bcf\u7d44\u6e2c\u8a66\u8cc7\u6599\u5148\u8f38\u51fa ABCD\uff0c\u63db\u884c\u5f8c\u518d\u8f38\u51fa\u8981\u878d\u5408\u7684\u7c89\u672b\uff0c\u6bcf\u4e00\u7a2e\u878d\u5408\u65b9\u5f0f (\u7c89\u672a\u4e0d\u6703\u91cd\u8986\u4f7f\u7528)<\/strong> \u8f38\u51fa\u4e00\u884c (\u4f9d\u71674\u500b\u865f\u78bc\u6240\u7d44\u6210\u7684\u6578\u5b57\u4ee5\u905e\u589e\u9806\u5e8f\u5370\u51fa\uff09<\/strong>\uff0c\u82e5\u7121\u6cd5\u627e\u51fa\u4e00\u7a2e\u7b26\u5408\u8981\u6c42\u7684\u878d\u5408\u65b9\u5f0f\uff0c\u5247\u5370\u51fa\u300cNo\u300d\u3002
\u6bcf\u7d44\u6e2c\u8a66\u8cc7\u6599\u6700\u5f8c\u90fd\u9700\u5370\u4e00\u884c\u7a7a\u884c<\/strong>\u3002\u6bcf\u884c\u8f38\u51fa\u6700\u5f8c\u90fd\u6709\u63db\u884c\u7b26\u865f\u3002<\/td><\/tr>
3
A 1 3 0
B 2 4 0
C 2 3 0
D 2 3 0
A 1 2 4 0
B 2 4 0
C 2 3 0
D 4 0
A 1 2 0
B 2 4 0
C 2 3 0
D 2 0<\/td>		ABCD
2314
2341

ABCD
3142

No

<\/td><\/tr><\/tbody><\/table>
ITSA 202405 #2 \u7bc4\u4f8b\u6e2c\u8cc7<\/figcaption><\/figure>\n\n\n\n

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

\u5728\u6536\u4e0d\u80fd\u653e\u5165\u7684\u7c89\u672b\u7a2e\u985e\u6642\uff0c\u53ef\u4ee5\u5ba3\u544a\u4e00\u500b Vector<Map<int, int>\uff0c\u5c07 A \u5230 D \u4e0d\u80fd\u653e\u5165\u7684\u7c89\u672b\u6578\u5b57\u5b58\u5230\u4e00\u500b Map \u4e2d\u4e26 Push_Back \u5230 Vector \u88e1\u3002<\/p>\n\n\n\n

\u518d\u4f86\u5c31\u662f\u8dd1 DFS\uff0c\u53c3\u6578\u6703\u9700\u8981\u4e00\u500b Vector<int> medicine\uff0c\u4ee3\u8868\u76ee\u524d\u7684\u6392\u5e8f\u65b9\u5f0f\u662f\u4ec0\u9ebc\uff0c\u9084\u6709\u4e00\u500b Map<int, int>\uff0c\u4ee3\u8868\u54ea\u4e9b\u7c89\u672b\u5df2\u7d93\u4f7f\u7528\u904e\u4e86\uff0c\u56e0\u70ba\u4e0d\u80fd\u91cd\u8907\u4f7f\u7528\u3002\u5148\u5224\u65b7\u5982\u679c medicine.size() == 4 \u4ee3\u8868 A \u5230 D \u7684\u7c89\u672b\u90fd\u5df2\u7d93\u6392\u597d\u4e86\uff0c\u5c31\u5c07 medicine \u4e2d\u7684\u8cc7\u6599\u505a\u8f38\u51fa\uff0c\u5426\u5247\u5c31\u7e7c\u7e8c\u6392\u5e8f\uff0c\u8dd1\u4e00\u500b For\u8ff4\u5708 \u5f9e 1 \u5230 4\uff0c\u4ee3\u8868\u8981\u653e\u5165\u7684\u7c89\u672b\u6578\u5b57\uff0c\u5728 For\u8ff4\u5708 \u4e2d\u53ef\u4ee5\u5ba3\u544a\u4e00\u500b\u8b8a\u6578 index = medicine.size()\uff0c\u9019\u500b index \u5c31\u4ee3\u8868\u6211\u5011\u76ee\u524d\u8981\u6392\u7b2c\u5e7e\u500b\u4f4d\u7f6e\u7684\u7c89\u672b\u3002\u5982\u679c\u76ee\u524d\u8dd1\u5230\u7684\u7c89\u672b\u6578\u5b57\u6c92\u6709\u88ab\u7528\u904e\u4e14\u4e0d\u662f index \u9019\u500b\u4f4d\u7f6e\u7684\u5371\u96aa\u7c89\u672b\uff0c\u5c31\u5c07 Map \u4e2d\u7684\u8cc7\u6599\u66f4\u65b0\u5df2\u7d93\u7528\u904e\u9019\u500b\u7c89\u672b\u4e86\uff0c\u4e26\u4e14\u5c07\u9019\u500b\u7c89\u672b\u6578\u5b57 Push_Back \u5230 medicine \u4e2d\uff0c\u7136\u5f8c\u518d\u6b21\u547c\u53eb DFS\u3002\u547c\u53eb\u5b8c\u4e4b\u5f8c\u8a18\u5f97\u8981\u5c07\u525b\u525b\u66f4\u52d5\u904e\u4e86 Map \u9084\u6709 medicine \u505a\u9084\u539f\u3002<\/p>\n\n\n\n

\u53ef\u4ee5\u9810\u8a2d\u4e00\u500b\u5e03\u6797\u503c ok = false\uff0c\u5982\u679c\u6709\u8a08\u7b97\u51fa\u6392\u5217\u9806\u5e8f\u7684\u8a71\u5c31\u5c07\u5176\u8a2d\u70ba true\uff0c\u5728\u8dd1\u5b8c\u6240\u6709 DFS \u4e4b\u5f8c\uff0c\u5982\u679c !ok \u4ee3\u8868\u6c92\u6709\u53ef\u4ee5\u4f7f\u7528\u7684\u6392\u5217\u7d44\u5408\uff0c\u5c31\u8f38\u51fa\u300cNo\u300d\u3002<\/p>\n\n\n\n

\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff0dITSA 202405 #2\uff1a\u878d\u5408\u5be6\u9a57<\/a><\/h3>\n\n\n\n
#include <iostream>\n#include <vector>\n#include <map>\nusing namespace std;\n\nvector<map<int, int>>v;\nbool ok = false;\n\nvoid DFS(vector<int>medicine, map<int, int>MAP) {\n    if (medicine.size() == 4) {\n        if (!ok) cout << "ABCD\\n";\n        for (int i = 0; i<4; i++) cout << medicine[i];\n        cout << "\\n";\n        ok = true;\n        return;\n    }\n    for (int i = 1; i<=4; i++) {\n        int index = medicine.size();\n        if (MAP[i] == 0 && v[index][i] == 0) {\n            MAP[i]++;\n            medicine.push_back(i);\n            DFS(medicine, MAP);\n            medicine.pop_back();\n            MAP[i]--;\n        }\n    }\n}\n\nint main() {\n    cin.sync_with_stdio(0);\n    cin.tie(0);\n    int N;\n    cin >> N;\n    for (int i = 0; i<N; i++) {\n        v.clear();\n        ok = false;\n        for (int j = 0; j<4; j++) {\n            char ch;\n            cin >> ch;\n            int tmp;\n            map<int, int>MAP;\n            while (cin >> tmp && tmp != 0) MAP[tmp]++;\n            v.push_back(MAP);\n        }\n        vector<int>medicine;\n        map<int, int>MAP;\n        DFS(medicine, MAP);\n        if (!ok) cout << "No\\n";\n        cout << "\\n";\n    }\n}\n\n\/\/ITSA 202405 #2\n\/\/Dr. SeanXD<\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"
\u5c0f\u4f73\u5728\u505a\u5be6\u9a57\u3002\u5979\u60f3\u5c07 4 \u7a2e\u5316\u5b78\u85e5\u5291\u300cA\u3001B\u3001C\u3001D\u300d\u4e2d\uff0c\u52a0\u5165\u300c1\u30012\u30013\u30014\u300d\u7a2e\u5316\u5b78\u7c89\u672b\uff0c\u4ee5\u89c0\u5bdf\u878d\u5408\u5f8c\u7684\u5316\u5b78 […]<\/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":[36],"tags":[14,20,8,34,9],"class_list":["post-875","post","type-post","status-publish","format-standard","hentry","category-itsa","tag-map","tag-20","tag-8","tag-34","tag-9"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/875","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=875"}],"version-history":[{"count":4,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/875\/revisions"}],"predecessor-version":[{"id":995,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/875\/revisions\/995"}],"wp:attachment":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/media?parent=875"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/categories?post=875"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/tags?post=875"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}