CSP-J/S is the most influential informatics competition in China. This year, over 250,000 candidates participated in CSP-J/S, and more than 50,000 candidates are estimated to take part in the second round of the exam. To help contestants prepare for CSP-J/S, Luogu has organized a simulation test. Contestants are welcome to familiarize themselves with the types and difficulties of tasks or get acquainted with the algorithm competition environment in China.
In this contest, the statements in PDF, both in Chinese and in English, will be provided. One can download the PDF version in the attachment of task A. Moreover, samples will be provided in the attachment of each task.
This contest is not full-feedback. You will not receive the results during the contest, and the score of each problem is only dependent on your last submission.
- Contest URL:
- CSP-J simulation test (mainly for candidates aged 8-14): https://www.luogu.com.cn/contest/200686
— Start Time: https://www.timeanddate.com/worldclock/fixedtime.html?msg=CSP-J&iso=20241013T0830&p1=237
— Duration: 210 minutes
— Rated range: <=1600 rating on Luogu - CSP-S simulation test (mainly for candidates aged 10-18): https://www.luogu.com.cn/contest/200849
— Start Time: https://www.timeanddate.com/worldclock/fixedtime.html?msg=CSP-S&iso=20241013T1430&p1=237
— Duration: 240 minutes
— Rated range: for all rating on Luogu - Writer & Tester: GrandSouris, sszcdjr, Error_Yuan, Otomachi_Una, b6e0, N_z__, MatrixGroup, Graygoo_401, wyrqwq, E.Space, steven_yummy, jimmyywang, Inkyo, rui_er, Micro_Sun, jiangyixian1, cyxzzpforever
- The points value: 100-100-100-100
We are looking forward to your participation! English statement will be provided officially. We are working on establishing an English platform, but it takes time. We plan to complete this task by the end of 2024 or early 2025.
Thank you luogu for providing such a great contest!
I AK IOI!!!
As a CSP-J contestant,I hope everyone can win the first prize!
Welcome to join this useful contest for CSP!
Your English is so 6
What do you want to express by writing this comment?
Stop commenting useless words on Codeforces....
That's right.
I think they are just pupils around 11 years old and are weak in English I guess.
As a writer, welcome to participate!
As a tester, I think the problems are interesting!
why i can't get in to luogu.com.cn now
If you are not in Chinese Mainland, your visit will be much slower. Even inaccessible.
Try changing the network environment.
but i am in wenzhou,zhejiang
then try 1.1.1.1 bruh
Can I qp here？
no you can't.
what's the qp
That means qian'pai in Chinese and front row in English. Users in Luogu often say it in official announcement.
Yeah but nearly 80% comments come from Chinese.
But are the downvotes voted by Chinese? upd:I think it's actually not so necessary to downvote comments that isn't so readable, especially when you are not participating in the contest mentioned in this post and is just downvoting for their bad command of English.
yeah yeah.
ur right but im chinese as well.
Stop using Chingish to comment!
GL && HF!
em,I got 100+100+64+0=264 points during the contest,but I wonder how to solve T4?
dp, Dynamic Programming.
Hope to provide large examples. Then hope everyone good luck!
It seems that many testers come here to show their English ability,ha
Yours doesn't seem good either. In my view, the word "testers" should be "participants".
Thank you for correcting my mistakes.I'll tend to pratice ans pursue the improvement of Eng
GL&&HF in SCP-S
I think SCP-S is harder than CSP-S2023.
I think so, and it is much harder than CSPS 2023. I think it will also be harder than CSPS 2024.
Seems CSP-S2023 is the easiest one these years
Yes.
How to solve SCPS 2024 T1?
I do not have any idea.
dp,See:https://www.luogu.com.cn/paste/uu4x6gus
What's the simplest solution of CSP-S T3? I used random heuristic for general cases and got 100pts.
My heuristic is, we can calculate the optimal $$$k$$$ easily and matching random $$$k-1$$$ (current mode)-(current second mode) pairs, after that pray so that the remaining characters don't form a palindrome.
This is one of the intended solutions. My solution requires some case work and it is deterministic.
Disclaimer: The contest is SCP-S, but not CSP-S.
Sorry for my curiosity, do you have some intended solutions, with some analysis of successful rate?
PS: Where is the editorial?
Unlike atcoder, in luogu the editorial writen by users will be published after they are checked by the administrators and it usually takes 3~4 days.
The official editorial will be published 3 days later, too. If you want to read it now, you need to pay to luogu, or enter the luogu QQ group, where luogu users discuss solution.
My solution:
too hard.
Are there going to be editorials for the contest?
An unofficial English editorial is available at https://www.luogu.com/article/lgvreyk1.
I think SCP-S is not very well, is it?
The csp-j is so suck T1,T2,T3 are easy,but T4 is terrible!