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.

• A tutorial on using Luogu
• A brief introduction to Chinese NOI