{"id":173,"date":"2025-01-12T13:06:14","date_gmt":"2025-01-12T05:06:14","guid":{"rendered":"http:\/\/150.230.63.147\/blog\/?p=173"},"modified":"2025-01-12T13:06:15","modified_gmt":"2025-01-12T05:06:15","slug":"e-the-contest-%e8%a7%a3%e6%9e%90%e6%80%9d%e7%b6%ad%e3%80%81%e5%89%8d%e7%b6%b4%e5%92%8c","status":"publish","type":"post","link":"https:\/\/blog.seekrealthing.net\/blog\/?p=173","title":{"rendered":"E. The Contest \u89e3\u6790(\u601d\u7dad\u3001\u524d\u7db4\u548c)"},"content":{"rendered":"\n

Codeforce 1257 E. The Contest \u89e3\u6790(\u601d\u7dad\u3001\u524d\u7db4\u548c)<\/h1>\n

\u4eca\u5929\u6211\u5011\u4f86\u770b\u770bCF1257E
\n\u984c\u76ee\u9023\u7d50<\/a><\/p>\n

\n

\u984c\u76ee<\/strong>
\n\u6709\u4e09\u500b\u7c43\u5b50\uff0c\u653e\u6578\u5b57$1\\sim n$\u3002\u6c42\u6700\u5c0f\u7684\u6578\u5b57\u79fb\u52d5\u6b21\u6578\uff0c\u4f7f\u5f97\u4e09\u500b\u7c43\u5b50\u88e1\u7684\u6578\u5b57\u7531\u5c0f\u6392\u5230\u5927\u3002<\/p>\n<\/blockquote>\n

\u524d\u8a00<\/h3>\n

\u5f88\u4e45\u6c92\u6709\u5beb\u984c\u76ee\u4e86\uff0c\u4e3b\u8981\u662f\u81ea\u5df1\u672c\u79d1\u4e5f\u4e0d\u662f\u505a\u96fb\u8166\u7684\uff0c\u800c\u4e14\u5beb\u96e3\u5ea62000\u7684\u984c\u76ee\u771f\u7684\u9047\u5230\u5f88\u591a\u632b\u6298\u2026\uff0c\u5e38\u5e38\u5beb\u5230\u60f3\u653e\u68c4\u3002
\n\u9019\u984c\u4e5f\u641e\u4e86\u5f88\u4e45\uff0c\u770b\u4e86\u5225\u4eba\u7684\u89e3\u6790<\/a>\u624d\u77e5\u9053\u600e\u9ebc\u505a\uff0c\u8166\u888b\u6253\u7d50\u4e86\u4e00\u6574\u5929\u3002<\/p>\n

\u60f3\u6cd5<\/h3>\n

\u9019\u984c\u5176\u5be6\u6709dp\u89e3\u6cd5<\/a>\uff0c\u4f46\u662f\u9019\u7bc7\u6587\u7ae0\u5c31\u4e0d\u8b1b\u4e86\u3002
\n\u7b2c\u4e00\u773c\u770b\u5230\u9019\u984c\u76ee\uff0c\u53ef\u80fd\u6703\u89ba\u5f97\u5c31\u662f\u8981\u627e\u5230\u4e00\u7d44\u6578\u5b57$[l,r]$\u8868\u793a\u7b2c\u4e00\u500b\u7c43\u5b50\u653e$[1,l]$\uff0c\u7b2c\u4e8c\u500b\u7c43\u5b50\u653e$[l+1,r-1]$\uff0c\u7b2c\u4e09\u500b\u7c43\u5b50\u653e$[r,n]$\u3002\u4f46\u662f$n\\le2e5$\uff0c\u6240\u4ee5\u6211\u5011\u61c9\u8a72\u662f\u904d\u6b77$l$\u5f9e$1\\sim n$\uff0c\u7136\u5f8c\u5feb\u901f\u5730\u627e\u51fa\u54ea\u500b$r$\u6700\u597d\u3002
\n\u4ee4$cnt[i][j]$\u8868\u793a\u7b2c$i$\u500b\u7c43\u5b50\u64c1\u6709\u5e7e\u500b$[1,j]$\u7684\u6578\u5b57\u3002
\n\u5047\u8a2d\u76ee\u524d\u6c7a\u5b9a\u597d\u4e86$[l,r]$\uff0c\u90a3\u9ebc\u9700\u8981\u7684\u6b65\u6578\u5373:$cnt[1][l+1\\sim n]+cnt[2][1\\sim l]+cnt[2][r\\sim n]+cnt[3][1\\sim r-1]$
\n\u4e5f\u5c31\u662f\u6211\u5011\u8a08\u7b97\u8981\u5e7e\u6b65\u624d\u80fd\u628a\u539f\u672c\u4e0d\u5728\u6b63\u78ba\u7684\u7c43\u5b50\u88e1\u7684\u6578\u5b57\u653e\u5230\u6b63\u78ba\u7684\u7c43\u5b50\u88e1\u3002
\n\u5047\u8a2d\u5df2\u7d93\u56fa\u5b9a\u4e86$l$\uff0c$cnt[1][l+1\\sim n]+cnt[2][1\\sim l]$\u5c31\u53ef\u4ee5\u7528\u524d\u7db4\u548c\u8f15\u9b06\u7b97\u51fa\u4f86\uff0c\u63a5\u8457\u6211\u5011\u53ea\u8981\u6c7a\u5b9a$cnt[2][r\\sim n]+cnt[3][1\\sim r-1]$\u5230\u5e95\u662f\u54ea\u500b$r$\u624d\u6703\u6700\u5c0f\u5c31\u597d\u3002
\n\u800c\u53ea\u8981\u4e8b\u5148\u8a08\u7b97\u5c0d\u65bc\u6bcf\u500b\u5f8c\u7db4$[r\\sim n]$\uff0c\u6700\u5c0f\u7684$cnt[2][r\\sim n]+cnt[3][1\\sim r-1]$\u662f\u591a\u5c11\uff0c\u5c31\u53ef\u4ee5\u89e3\u6c7a\u9019\u984c\u4e86\u3002<\/p>\n

\u7a0b\u5f0f\u78bc:<\/h3>\n
const int _n=2e5+10;  \nint t,n,m,k[3],pos[_n],cnt[3][_n],mn[_n],ans=0x7f7f7f7f;  \nmain(void) {ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);  \n  rep(_,0,3){cin>>k[_];n+=k[_];}  \n  rep(_,0,3)rep(i,0,k[_]){cin>>t;pos[t]=_;}  \n  rep(i,1,n+1)rep(_,0,3)cnt[_][i]=cnt[_][i-1]+(pos[i]==_);  \n  mn[n+1]=cnt[2][n];  \n  per(i,1,n+1)mn[i]=min(mn[i+1],cnt[1][n]-cnt[1][i-1]+cnt[2][i-1]);  \n  rep(i,0,n+1)ans=min(ans,cnt[0][n]-cnt[0][i]+cnt[1][i]+mn[i+1]);  \n  cout<<ans;  \n  return 0;  \n}  \n<\/code><\/pre>\n
\u6a19\u982d\u3001\u6a21\u677f\u8acb\u9edeSubmission\u770b
\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":[10,9,25,8],"class_list":["post-173","post","type-post","status-publish","format-standard","hentry","category-ojcode","tag-codeforce","tag-ojcode","tag-25","tag-8"],"jetpack_publicize_connections":[],"yoast_head":"\nE. 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