Hi Codeforces! I am proud to invite you to the online mirror of 2025 Taiwan NHSPC Mock Contest!
The National High School Programming Contest (NHSPC) is an official informatics contest from Taiwan, where the top ten students enter the spring training camp, in which the IOI participants are selected. The NHSPC Mock Contest is a contest prepared by former OI participants from Taiwan, and helps contestants prepare for the official NHSPC which takes place the following week. This year, just like 2024, 2023, 2022, and 2020, we have decided to hold an online mirror on Codeforces, so people around the world can participate.
The mirror on Codeforces Gym takes place on Sunday, December 7, 2025 at 09:00UTC+8, and will last for 5 hours. The scoring is in IOI format, there will be 7-10 problems, each of which has a maximum score of 100 points. There will be subtasks of varying difficulty in each problem, and we hope that the problems will be interesting for contestants at all rating levels. The problem statements will be in English and (Traditional) Chinese.
I would like to thank our team for making this contest possible: becaido, Darren0724, GrandTiger1729, PsychoPinkQ, prairie2022, qwe1rt1yuiop1, hengliao, LittleOrange666, CYhuang, daniel071292, owoovo, Pacybwoah, phoenix0423, PCC, the_coding_pooh, willychan, 110026, pring, dnnnda
We suggest reading all problem statements and we hope you'll enjoy the contest!
Update: Congratulations to Brinton for winning the official contest, and dreamoon_love_AA for winning the mirrored contest!
Editorial is available here (Traditional Chinese).
Auto comment: topic has been updated by guagua0407 (previous revision, new revision, compare).
Auto comment: topic has been updated by guagua0407 (previous revision, new revision, compare).
As a tester, hope everyone enjoy the contest!
GL & HF!
As a tester, I think the problems are really interesting and suitable for helping Taiwanese students prepare for the official NHSPC.
As a problem setter, I think the problems are really fun and challenging. Enjoy them!
Will there be an english editorial?
Currently we are only planning to write the editorial in chinese, sorry for the inconvenience.
As a tester, I think the problems are really interesting and is a good chance to practice for the official NHSPC.
orzorzorz orzorzorz orzorzorz orzorzorz orzorzorz
As a member of the system team, I am jealous of the contributions guagua0407 has gained.
Auto comment: topic has been updated by guagua0407 (previous revision, new revision, compare).
Where can I find the actual NHSPC problems?
Although this year’s problem isn’t public yet, you can find the archives from previous years here: https://tioj.ck.tp.edu.tw/problems/tag/%E5%85%A8%E5%9C%8B%E8%B3%BD https://www.twpca.org/