{"id":152,"date":"2025-01-12T12:54:24","date_gmt":"2025-01-12T04:54:24","guid":{"rendered":"http:\/\/150.230.63.147\/blog\/?p=152"},"modified":"2025-01-12T12:54:24","modified_gmt":"2025-01-12T04:54:24","slug":"d-captain-flint-and-treasure-%e8%a7%a3%e6%9e%90%e6%8b%93%e6%a8%b8%e6%8e%92%e5%ba%8f%e3%80%81stack","status":"publish","type":"post","link":"https:\/\/blog.seekrealthing.net\/blog\/?p=152","title":{"rendered":"D. Captain Flint and Treasure \u89e3\u6790(\u62d3\u6a38\u6392\u5e8f\u3001Stack)"},"content":{"rendered":"\n

Codeforce 1388 D. Captain Flint and Treasure \u89e3\u6790(\u62d3\u6a38\u6392\u5e8f\u3001Stack)<\/h1>\n

\u4eca\u5929\u6211\u5011\u4f86\u770b\u770bCF1388D
\n\u984c\u76ee\u9023\u7d50<\/a><\/p>\n

\n

\u984c\u76ee<\/strong>
\n\u7565\uff0c\u8acb\u76f4\u63a5\u770b\u539f\u984c\u3002<\/p>\n<\/blockquote>\n

\u524d\u8a00<\/h3>\n

\u70ba\u4ec0\u9ebc
\n\u6211
\n\u60f3\u4e0d\u5230
\n\u8981
\n\u7528
\nStack<\/p>\n

\u5f88\u4e45\u6c92\u5bebblog\u4e86\uff0c\u9019\u6bb5\u6642\u9593\u6bd4\u8f03\u5c11\u5beb\u984c\u76ee\uff0c\u5c31\u7b97\u5beb\u4e86\u4e5f\u63d0\u4e0d\u592a\u8d77\u52c1\u53bb\u628a\u60f3\u6cd5\u5beb\u6210\u6587\u7ae0\u3002
\n\u7136\u800c\u5728\u958b\u59cb\u5beb\u96e3\u5ea62000\u7684\u984c\u76ee\u4ee5\u5f8c\uff0c\u611f\u89ba\u591a\u4e86\u592a\u591a\u6211\u601d\u8003\u6642\u4e0d\u6703\u60f3\u5230\u7684\u89e3\u6cd5\uff0c\u56e0\u6b64\u6c7a\u5b9a\u91cd\u65b0\u958b\u59cb\u5beb\u6587\u7ae0\u4e86Orz\u3002<\/p>\n

\u60f3\u6cd5<\/h3>\n

\u9996\u5148\u6211\u5011\u5148\u89c0\u5bdf\u5230\uff0c\u5c0d\u65bc\u6240\u6709$b[i]\\neq-1$\u7684$i$\uff0c\u5982\u679c$a[i]\\ge0$\uff0c\u90a3\u9ebc\u6211\u5011\u6700\u597d\u662f\u8981\u5148\u9078\u9019\u500b$i$\uff0c\u9019\u6a23\u63a5\u4e0b\u4f86\u8981\u52a0\u4e0a\u7684\u6578\u5b57\u6709\u53ef\u80fd\u6703\u8b8a\u5927\u3002\u5982\u679c$a[i]<0$\uff0c\u90a3\u9ebc\u6211\u5011\u6700\u597d\u662f\u5148\u4e0d\u8981\u52d5\u9019\u500b\u6578\u5b57\uff0c\u7b49\u770b\u770b\u6703\u4e0d\u6703\u6709\u8fa6\u6cd5\u8b93<\/strong>$a[i]\\ge0$\u3002
\n\u56e0\u6b64\u6211\u5011\u6703\u767c\u73fe\u9019\u984c\u61c9\u8a72\u662f\u8981\u7528\u5230\u62d3\u6a38\u6392\u5e8f\uff0c\u4e5f\u5c31\u662f\u6211\u5011\u6bcf\u6b21\u53ea\u8655\u7406$a[i]$\u4e0d\u53ef\u80fd\u518d\u88ab\u6539\u52d5<\/strong>\u7684$i$\u3002
\n\u6211\u5011\u5c0d\u65bc\u6240\u6709$b[i]\\neq0$\u7684$i$\u90fd\u9023\u4e00\u500b$i\\rightarrow b[i]$\u7684\u908a\uff0c\u4e26\u8a18\u9304\u6bcf\u500b\u9ede\u7684\u5165\u5ea6\uff0c\u4e26\u4e14\u6bcf\u6b21\u53ea\u770b\u5165\u5ea6\u70ba\u96f6\u7684\u9ede$i$\u3002
\n\u5982\u679c$a[i]\\ge0$\uff0c\u90a3\u9ebc\u6211\u5011\u53ef\u4ee5\u76f4\u63a5\u9078\u9019\u500b\u9ede\u9032\u884c\u64cd\u4f5c\uff0c\u4e26\u4e14\u8655\u7406\u5165\u5ea6\u7684\u8b8a\u5316\u3002\u5982\u679c$a[i]<0$\uff0c\u7531\u65bc\u76ee\u524d\u9019\u500b\u9ede$i$\u7684$a[i]$\u503c\u5df2\u7d93\u4e0d\u53ef\u80fd\u518d\u88ab\u6539\u52d5\u4e86\uff0c\u6240\u4ee5\u6211\u5011\u5e0c\u671b\u9019\u500b\u9ede\u6703\u5728\u300c\u6703\u88ab\u6b64\u9ede\u5f71\u97ff\u7684\u9ede\u90fd\u5df2\u7d93\u88ab\u9078\u904e\u4ee5\u5f8c<\/strong>\u300d\u518d\u88ab\u52a0\u5165\u5230\u7b54\u6848\u4e2d\uff0c\u56e0\u6b64\u6211\u5011\u5148\u628a$a[i]$\u653e\u9032stack\u88e1\uff0c\u4e26\u8655\u7406\u5165\u5ea6\uff0c\u76f4\u5230\u6574\u500b\u62d3\u6a38\u6392\u5e8f\u6d41\u7a0b\u7d50\u675f\u4ee5\u5f8c\uff0c\u6211\u5011\u4e00\u500b\u4e00\u500b\u628astack\u4e2d\u7684$a[i]$\u503c\u52a0\u5165\u7b54\u6848\u4e2d\u3002<\/p>\n

\u7a0b\u5f0f\u78bc:<\/h3>\n
const int _n=2e5+10;  \nint t,n,a[_n],b[_n],in[_n],val;  \nVI ans;  \nqueue<int> q;  \nstack<int> st;  \nmain(void) {ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);  \n  cin>>n;rep(i,1,n+1)cin>>a[i];rep(i,1,n+1)cin>>b[i];  \n  rep(i,1,n+1)if(b[i]!=-1)in[b[i]]++;  \n  rep(i,1,n+1)if(!in[i])q.push(i);  \n  while(!q.empty()){  \n    int x=q.front();q.pop();  \n    if(a[x]>=0){  \n      ans.pb(x);  \n      val+=a[x];if(b[x]!=-1)a[b[x]]+=a[x];  \n    }else st.push(x);  \n    if(b[x]!=-1){in[b[x]]--;if(!in[b[x]])q.push(b[x]);}  \n  }while(!st.empty()){  \n    int x=st.top();st.pop();ans.pb(x);  \n    val+=a[x];  \n  }  \n  cout<<val<<'\\n';  \n  rep(i,0,n)cout<<ans[i]<<' '; cout<<'\\n';  \n  return 0;  \n}  \n<\/code><\/pre>\n
\u6a19\u982d\u3001\u6a21\u677f\u8acb\u9edeSubmission\u770b(\u7531\u65bc\u5176\u5be6\u53ea\u9700\u8981\u7dad\u8b77\u5165\u5ea6\u5373\u53ef\uff0c\u56e0\u6b64\u6211\u6c92\u6709\u771f\u7684\u5b58\u4e00\u500b\u5716)
\nSubmission<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_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},"version":2}},"categories":[3],"tags":[10,9,39,38],"class_list":["post-152","post","type-post","status-publish","format-standard","hentry","category-ojcode","tag-codeforce","tag-ojcode","tag-stack","tag-38"],"jetpack_publicize_connections":[],"yoast_head":"\nD. 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