# OI Checklist – Two Weeks of New Features!↵
↵
It’s been about two weeks since I first announced [OI Checklist](https://checklist.spoi.org.in) in [this blog post](https://mirror.codeforces.com/blog/entry/145434). The blog was extremely well received, and I’d like to thank you guys for that! ↵
↵
During these two weeks, I’ve been working on OI Checklist and have added a lot of new features—some functional, some UI/UX, and some smaller tweaks. Here’s a summary of the most important ones:↵
↵
---↵
↵
## qoj.ac Sync — Fully Supported↵
↵
### Full Checklist↵
That’s right! You can now sync with **both oj.uz and qoj.ac**.↵
↵
|  |  |↵
|----------------------------------------|----------------------------------------|↵
↵
The cookie pulls your problem scores and updates your checklist. Your score for a problem is set to the maximum of what it previously was and the score, **fully subtask stitched**, that you have on qoj.ac.↵
↵
### Virtual Contests↵
The UI for virtual contests has also been updated. It now tracks submissions across **both oj.uz and qoj.ac** and takes the maximum score **per subtask**, even if the submissions are from different platforms! ↵
↵
This means two things: ↵
- You can now autotrack contests where not all problems are on oj.uz. ↵
- You can freely mix submissions between judges. ↵
↵
Update interface when starting a virtual contest: ↵
 ↵
↵
The blue squares indicate that the problem is available on that judge. In this case, the single black square means Problem 4 isn’t available on oj.uz. For all problems with blue squares, submissions made on any of the listed judges will be tracked.↵
↵
---↵
↵
## Improved Post-Contest Statistics↵
↵
If you choose to autotrack submissions for a contest, you’ll be greeted with two feature-rich graphs: ↵
↵
 ↵
↵
- A problem-by-problem score graph (toggleable per problem). ↵
- A total score graph. ↵
↵
Below that, you’ll also see a submission timeline: ↵
↵
 ↵
↵
Hovering over a point shows how many points that submission gained you. Submissions from **both oj.uz and qoj.ac** are merged here.↵
↵
---↵
↵
## Notes System for Problems↵
↵
You can now add notes to problems with an editor that supports both **Markdown and LaTeX**.↵
↵
|  |  |↵
|----------------------------------------|----------------------------------------|↵
↵
Keyboard shortcuts: ↵
- **Ctrl/Cmd + B** → bold ↵
- **Ctrl/Cmd + I** → italic ↵
- **Ctrl/Cmd + K** → hyperlink ↵
- **Ctrl/Cmd + E** → `code block` ↵
↵
The rightmost icon opens a preview, rendering your Markdown into a clean, readable format. You can also use **Ctrl/Cmd + /** to toggle between edit and preview mode.↵
↵
---↵
↵
## Platform preference ↵
↵
Reorder platforms ([here](https://checklist.spoi.org.in/settings)) to control which source is used for problem links. The list is checked **top to bottom**, and the first matching source provides the link. ↵
↵
For example, if you prefer qoj.ac over oj.uz, just drag **qoj.ac** above **oj.uz**—your main page will now show links from qoj.ac instead of oj.uz. ↵
↵
↵
↵
---↵
↵
## New Authentication Methods↵
↵
You can now log in, register, or link your account using **Google** or **Discord**.↵
↵
↵
↵
---↵
↵
There's also tons of small changes and new settings that I've added not mentioned here.↵
↵
# Future Changes↵
↵
Here are some features I plan to add next: ↵
- [Codebreaker](https://codebreaker.xyz/) sync (suggested by [user:am_aadvik,2025-08-27]) ↵
- On-hover problem statistics, similar to the old checklist (suggested by [user:litvinas,2025-08-27]) ↵
- A ranklist/users page based on total problems solved or other metrics (also suggested by [user:am_aadvik,2025-08-27]) ↵
- A more advanced `/profile` page that might include past virtual contests (suggested by me) ↵
↵
I’d also like to thank the two new contributors: [user:mariza_CY,2025-08-27] and [user:Nika533,2025-08-27] for adding problems from IZHO and EJOI (along with contest data). You can do this too—check out the [GitHub repository](https://github.com/avighnac/oi-checklist)! ↵
↵
---↵
↵
Any further suggestions are welcome and encouraged. Thanks for reading: now go register at [https://checklist.spoi.org.in/](https://checklist.spoi.org.in/)!↵
↵
It’s been about two weeks since I first announced [OI Checklist](https://checklist.spoi.org.in) in [this blog post](https://mirror.codeforces.com/blog/entry/145434). The blog was extremely well received, and I’d like to thank you guys for that! ↵
↵
During these two weeks, I’ve been working on OI Checklist and have added a lot of new features—some functional, some UI/UX, and some smaller tweaks. Here’s a summary of the most important ones:↵
↵
---↵
↵
## qoj.ac Sync — Fully Supported↵
↵
### Full Checklist↵
That’s right! You can now sync with **both oj.uz and qoj.ac**.↵
↵
|  |  |↵
|----------------------------------------|----------------------------------------|↵
↵
The cookie pulls your problem scores and updates your checklist. Your score for a problem is set to the maximum of what it previously was and the score, **fully subtask stitched**, that you have on qoj.ac.↵
↵
### Virtual Contests↵
The UI for virtual contests has also been updated. It now tracks submissions across **both oj.uz and qoj.ac** and takes the maximum score **per subtask**, even if the submissions are from different platforms! ↵
↵
This means two things: ↵
- You can now autotrack contests where not all problems are on oj.uz. ↵
- You can freely mix submissions between judges. ↵
↵
Update interface when starting a virtual contest: ↵
 ↵
↵
The blue squares indicate that the problem is available on that judge. In this case, the single black square means Problem 4 isn’t available on oj.uz. For all problems with blue squares, submissions made on any of the listed judges will be tracked.↵
↵
---↵
↵
## Improved Post-Contest Statistics↵
↵
If you choose to autotrack submissions for a contest, you’ll be greeted with two feature-rich graphs: ↵
↵
 ↵
↵
- A problem-by-problem score graph (toggleable per problem). ↵
- A total score graph. ↵
↵
Below that, you’ll also see a submission timeline: ↵
↵
 ↵
↵
Hovering over a point shows how many points that submission gained you. Submissions from **both oj.uz and qoj.ac** are merged here.↵
↵
---↵
↵
## Notes System for Problems↵
↵
You can now add notes to problems with an editor that supports both **Markdown and LaTeX**.↵
↵
|  |  |↵
|----------------------------------------|----------------------------------------|↵
↵
Keyboard shortcuts: ↵
- **Ctrl/Cmd + B** → bold ↵
- **Ctrl/Cmd + I** → italic ↵
- **Ctrl/Cmd + K** → hyperlink ↵
- **Ctrl/Cmd + E** → `code block` ↵
↵
The rightmost icon opens a preview, rendering your Markdown into a clean, readable format. You can also use **Ctrl/Cmd + /** to toggle between edit and preview mode.↵
↵
---↵
↵
## Platform preference ↵
↵
Reorder platforms ([here](https://checklist.spoi.org.in/settings)) to control which source is used for problem links. The list is checked **top to bottom**, and the first matching source provides the link. ↵
↵
For example, if you prefer qoj.ac over oj.uz, just drag **qoj.ac** above **oj.uz**—your main page will now show links from qoj.ac instead of oj.uz. ↵
↵
↵
↵
---↵
↵
## New Authentication Methods↵
↵
You can now log in, register, or link your account using **Google** or **Discord**.↵
↵
↵
↵
---↵
↵
There's also tons of small changes and new settings that I've added not mentioned here.↵
↵
# Future Changes↵
↵
Here are some features I plan to add next: ↵
- [Codebreaker](https://codebreaker.xyz/) sync (suggested by [user:am_aadvik,2025-08-27]) ↵
- On-hover problem statistics, similar to the old checklist (suggested by [user:litvinas,2025-08-27]) ↵
- A ranklist/users page based on total problems solved or other metrics (also suggested by [user:am_aadvik,2025-08-27]) ↵
- A more advanced `/profile` page that might include past virtual contests (suggested by me) ↵
↵
I’d also like to thank the two new contributors: [user:mariza_CY,2025-08-27] and [user:Nika533,2025-08-27] for adding problems from IZHO and EJOI (along with contest data). You can do this too—check out the [GitHub repository](https://github.com/avighnac/oi-checklist)! ↵
↵
---↵
↵
Any further suggestions are welcome and encouraged. Thanks for reading: now go register at [https://checklist.spoi.org.in/](https://checklist.spoi.org.in/)!↵
