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Text Content

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 2. Home
 3. Problem Set
 4. Training
 5. Contest
 6. Discussion
 7. Record
 8. More

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 3. Language



想要免费创建一个属于自己的 OJ 吗？

新用户必读

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Github Repo (AGPL 3.0)


推荐题库列表

浴谷 | 计算机科学教育新生态

深入浅出基础篇

测试题域

Codeforces

CCF 真题

USACO

一本通启蒙篇/入门/提高

BZOJ

SPOJ

UOJ

POJ

LOJ

AtCoder




CONTEST

 1. 31
    2024-12
    
    
    FURRYCTF 2024（寒假赛）
    
     * IOI
     * Rated
     * 360 hour(s)
     * 158

 2. 11
    2024-5
    
    
    华为算法精英实战营第六期（HYDROOJ 镜像测试赛）
    
     * IOI
     * 1224 hour(s)
     * 263

 3. 10
    2023-6
    
    
    「SFCOI-2」SADNESS FAN CLUB ROUND 2
    
     * IOI
     * Rated
     * 4 hour(s)
     * 58

 4. 11
    2023-3
    
    
    「SFCOI-1」SADNESS FAN CLUB ROUND 1
    
     * IOI
     * Rated
     * 4 hour(s)
     * 67

 5. 9
    2022-4
    
    
    愚人节比赛
    
     * IOI
     * 48 hour(s)
     * 104

 * More >


TRAINING

 1.  1192
     Enrolled
     
     
     新手村
     
     任何一个伟大的目标，都有一个微不足道的开始。
     
      * 8 sections, 38 problems
      * 

 2.  534
     Enrolled
     
     
     能力全面提升综合题单
     
     StudyingFather 的洛谷综合题单
     
      * 109 sections, 715 problems
      * 

 3.  77
     Enrolled
     
     
     NOIP 提高组 (NOIP-S)
     
     NOIP 提高组 (NOIP-S)
     
      * 11 sections, 60 problems
      * 

 4.  95
     Enrolled
     
     
     NOIP 普及组 (NOIP-J)
     
     NOIP 普及组 (NOIP-J)
     
      * 2 sections, 8 problems
      * 

 5.  681
     Enrolled
     
     
     BZOJ 全面强化训练题单
     
     因为 pid > 4894 的题目存在缺失，所以再搞题单的时候就去除了原题单中题号大于 4894
     的题目，然后顺便敲了几个题号补上（一个算法中如果只有一道题还是100打头就是乱加的，因为每一块不能没有题目）。
     如果大家有遇到对应算法好的题目欢迎找我添加。
     
      * 96 sections, 514 problems
      * 

 6.  72
     Enrolled
     
     
     提高历练地
     
     已经去除了普及组难度的，请组织放心。成长大牛之必写题！！！
     
      * 22 sections, 108 problems
      * 

 7.  53
     Enrolled
     
     
     省选斗兽场/NOI神殿
     
     为省选及以上选手制作的训练场。其实，省选水平的oier不需要一些外加的刷题列表，本栏仅供参考，也欢迎各位指出不足。
     
      * 24 sections, 121 problems
      * 

 8.  77
     Enrolled
     
     
     USACO
     
     美国经典的算法练习题库，值得一刷
     
      * 22 sections, 83 problems
      * 

 9.  91
     Enrolled
     
     
     J到S的阴暗爬行
     
     CSP-J 到 CSP-S之路
     
      * 11 sections, 296 problems
      * 

 10. 140
     Enrolled
     
     
     NOI从入门到入土
     
     应该是面对CSP考试，非NOI，带你从Hello world到Stack overflow。
     题目覆盖了CSP入门和提高的所有知识点，只要循序渐进，每个小节做8-10题，武林盟主或者CSP一等都指日可待。
     
      * 15 sections, 580 problems
      * 

 * More >


RANKING

Rank Username RP Bio

1 liujiameng 431 BZOJ 待处理帖子： -
https://hydro.ac/d/bzoj/discuss/662849e33ffdbb8... 2 baoshuo MOD 396
学习，就是发现自己越来越菜的过程。 || 个人主页 [Blog](https... 3 Macesuted QWQ SU 395 About Me [My
Code Reposito... 4 undefined 可爱！ SU 374 2021-9-19 记 >
我到现在都没有自己的博客站，之前wp，hexo，typecho都用过，然后发现————原来我根... 5 Maplisky 枫 368 AFOed | 退...
6 Che_001 351 7 Liking_Cpp_In_Luogu 346 A Liking_Cpp OIer 8 liukejie2021 325
4225 4248 4400 - 4449 ok - 设 f,wf,wf,w 两个数列，一个正整数 n(4≤n)n(4\le n)n(4≤n) ... 9
NetherDevil 316 NO LONGER AN OIER. 10 wheneveright MOD 311 ＮＥＶＥＲ！ＧＩＶＥＳ！ＵＰ！

 * More >


DISCUSSION

 1.  8
     Comments
     
     
     HYDROOJ MARKDOWN & LATEX 完全指南
     
      * Hydro
      * 340 views
      * Rosmarinus @ 1 month ago

 2.  43
     Comments
     
     
     HYDROOJ 每日一题
     
      * HydroOJ
      * 7069 views
      * Macesuted @ 3 days ago

 3.  41
     Comments
     
     
     【站务】【新用户必读】站务整合帖
     
      * HydroOJ
      * 10693 views
      * Rosmarinus @ 1 year ago

 4.  0
     Comments
     
     
     题解质量问题
     
      * 题解
      * 3 views
      * 一只火柴人 @ 1 hour ago

 5.  0
     Comments
     
     
     GOC小游戏
     
      * 编程
      * 10 views
      * dlzs 2515 @ 1 day ago

 6.  1
     Comments
     
     
     题面是假的啊！
     
      * 棋盘游戏
      * 75 views
      * vIq2347 @ 3 weeks ago

 7.  4
     Comments
     
     
     那个INCORRECT STRING LENGTH是什么意思啊
     
      * 「MCOI-04」Dream SMP
      * 31 views
      * Randy @ 3 weeks ago

 8.  1
     Comments
     
     
     测试数据有误
     
      * [Shoi2005] 最节俭演化树
      * 24 views
      * wuxigk @ 2 weeks ago

 9.  0
     Comments
     
     
     这是BUG吗？
     
      * 问答
      * 44 views
      * hetao15509837 @ 5 days ago

 10. 2
     Comments
     
     
     题面在这里。
     
      * 疯狂的馒头
      * 32 views
      * reverber @ 3 weeks ago

 11. 2
     Comments
     
     
     哪位大佬点拨一下思路
     
      * 数学
      * 35 views
      * 6666 @ 1 month ago

 12. 1
     Comments
     
     
     SPJ 呢？
     
      * 登顶计划
      * 27 views
      * adam01 @ 1 month ago

 13. 5
     Comments
     
     
     发现HYDRO一个奇怪的东西……
     
      * Hydro
      * 89 views
      * Han_Si_Ying @ 1 week ago

 14. 1
     Comments
     
     
     得说说修约方式吧
     
      * 计算π
      * 46 views
      * farter @ 3 weeks ago

 15. 1
     Comments
     
     
     全站圆角（搬运）
     
      * Hydro
      * 67 views
      * HelloWorldForGao @ 1 month ago

 16. 1
     Comments
     
     
     HYDRO 自建域的题目的数据大小上限
     
      * Hydro
      * 56 views
      * ydzr00000 @ 1 month ago

 17. 4
     Comments
     
     
     2024CSP-J和CSP-S复赛估分
     
      * C++
      * 74 views
      * Plankton @ 3 hours ago

 18. 0
     Comments
     
     
     2015NHOI小乙 第六题 小球
     
      * 小球
      * 16 views
      * Demir @ 1 month ago

 19. 3
     Comments
     
     
     "插件" 功能被弃用了?
     
      * Hydro
      * 118 views
      * Calustan @ 1 month ago

 20. 12
     Comments
     
     
     上接两个帖子
     
      * Hydro
      * 44 views
      * liukejie2021 @ 1 month ago

 * More >


RECENT PROBLEMS

[NOIP2024] 遗失的赋值（民间数据） 1 week ago

[Ynoi2024] 弥留之国的爱丽丝 1 week ago

[Ynoi2024] After god 1 week ago

[CEOI2015] 管道 1 week ago

「KTSC 2023 R2」团队建设 1 week ago

「KTSC 2023 R2」学生 1 week ago

「KTSC 2023 R2」会议室 2 1 week ago

「KTSC 2023 R2」基地简化 1 week ago

「KTSC 2023 R1」出租车旅行 1 week ago

「KTSC 2023 R1」外环道路 2 1 week ago


DISCUSSION NODES


 * 泛
   
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   4.  Go
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   6.  PHP
   7.  Python
   8.  Rust
   9.  保送
   10. 数学
   11. 编程


 * HYDRO
   
   1. Hydro
   2. 团队
   3. 建议
   4. 月赛


 * 探索
   
   1. 分享
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   3. 题解


RECOMMENDED


 * CHINESE
   
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 * ENGLISH
   
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   3. CodeChef
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