HHSOJ returned!

The famous OJ: HHSOJ Essential is back now with a newer version!!

Experience it here

Note:
- Unfortunately, all previous users and submissions are lost 🙁
- The server stores password by plain text. Please do not use a secure one. However, we promise we will not steal your password.
- Includes all previous LSS Problemset and 2020 fun
- 2 more brand new questions!
- We are now using HHSOJ Maven 3.3.0! There's now a standing system to track others' status!

Huge thanks to myself and Zzzyt for reviving this great project!