\u3002\u3002\u3002
\n
\n\u7c7b\u683c\u96f7\u7801\u987a\u5e8f\u751f\u6210\u5206\u5212…
\n\u67d0\u79cd\u57fa\u4e8e\u9012\u5f52\u7684\u6784\u9020\u3002<\/p>\n
\r\n#include <iostream>\r\n#include <cstring>\r\n#include <vector>\r\nusing namespace std;\r\n\r\nconst int N = 100;\r\nint A[N], C[N]; string SS[N];\r\nstring S;\r\nint n;\r\n\r\nvector<string> res;\r\n\r\nvoid encode(){\r\n\t\/*for (int i=0;i<n;i++)\r\n\t\tcout << A[i] << " ";\r\n\tcout << endl;\r\n\t *\/\r\n\t \r\n\t\r\n\tint m = 0;\r\n\tfor (int i=0;i<n;i++)\r\n\t\tm = max(m, A[i]);\r\n\tfor (int i=0;i<=m;i++)\r\n\t\tSS[i].clear();\r\n\tS.clear();\t\r\n\t\r\n\tfor (int i=0;i<n;i++){\r\n\t\tif (i==9) SS[A[i]] += "10";\r\n\t\telse SS[A[i]] += char(i + 49);\r\n\t\tSS[A[i]] += ',';\r\n\t}\r\n\t\r\n\tfor (int i=0;i<=m;i++){\r\n\t\tSS[i].erase(SS[i].size()-1);\r\n\t\tS += "{", S += SS[i], S += "},";\r\n\t}\r\n\t\r\n\t\r\n\tS.erase(S.size()-1);\r\n\tres.push_back(S);\r\n}\r\n\r\nvoid dfs(int k, int m){\r\n\tif (k==n){\r\n\t\tencode();\r\n\t}\r\n\telse {\r\n\t\t\r\n\t\tif ((C[k]&1)==0){\r\n\t\t\tfor (int i=0;i<=m;i++)\r\n\t\t\t\tA[k] = i, dfs(k+1, m);\r\n\t\t\tA[k] = m+1, dfs(k+1, m+1);\r\n\t\t}\r\n\t\telse { \r\n\t\t\t\r\n\t\t\tA[k] = m+1, dfs(k+1, m+1);\r\n\t\t\tfor (int i=m;i>=0;i--)\r\n\t\t\t\tA[k] = i, dfs(k+1, m);\r\n\t\t}\r\n\t\r\n\t\tC[k]++;\r\n\t}\r\n}\r\n\r\n\r\nint main(){\r\n\twhile (cin >> n){\r\n\t\tres.clear();\r\n\t\tmemset(C, 0, sizeof(C));\r\n\t\t\r\n\t\tdfs(1, 0);\r\n\t\tcout << res.size() << endl;\r\n\t\tfor (int i=0;i<res.size();i++)\r\n\t\t\tcout << res[i] << endl;\r\n\t}\r\n}\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"\u3002\u3002\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[1],"tags":[],"class_list":["post-94","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2tdP7-1w","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/94","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/comments?post=94"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/posts\/94\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/media?parent=94"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/categories?post=94"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/house\/wp-json\/wp\/v2\/tags?post=94"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}