| # | User | Rating |
|---|---|---|
| 1 | Benq | 3783 |
| 2 | jiangly | 3772 |
| 3 | tourist | 3706 |
| 4 | maroonrk | 3609 |
| 5 | Um_nik | 3591 |
| 6 | fantasy | 3526 |
| 7 | ko_osaga | 3500 |
| 8 | inaFSTream | 3477 |
| 9 | cnnfls_csy | 3427 |
| 10 | zh0ukangyang | 3423 |
| # | User | Contrib. |
|---|---|---|
| 1 | Um_nik | 185 |
| 2 | awoo | 182 |
| 3 | nor | 172 |
| 4 | -is-this-fft- | 170 |
| 5 | adamant | 169 |
| 6 | maroonrk | 165 |
| 7 | antontrygubO_o | 160 |
| 8 | SecondThread | 159 |
| 9 | dario2994 | 152 |
| 9 | kostka | 152 |
Want to see your progress in past IOI or KSN (Indonesian NOI)? Wish to rewind the live scoreboard?
Watch the contest footage here :
Features :
- Time slider
- Play and pause button
- Show and hide medal range
- Show and hide unofficial participants
- Ranking based on specific day or problem
- Mark some specific contestants
- Accuracy 99%
Here an example screenshot of the page : 
I decide to open the source code on GitHub :
We can deploy it even in AWS S3 Bucket since it is a static web. Any pull request for adding more features or fixing some issues are welcome.
I hope you enjoy the contestants' dramatic performances.
UPD 1: Adding Contest Footage of KSN.
UPD 2: Replacing new link for KSN Footage.
UPD 3: Add toggle button for unofficial participants.
Actually, this contest ended 2 months ago and you can upsolve here. But, because someone complained me about editorial of this problem yesterday and said that it was hard to understand. And also until I write this blog, just Benq and Pyqe that already submit (and both of them got AC). So, I try to rewrite a clearer explanation about this problem in this link (english version is available on page 8).
Additional :
By the way, I got an idea about this problem more than 3 years ago when I was in junior high school even before I know about cp. Finally, it is published after several years of waiting.
I wonder, what is the percentage of ioi 2019 contestant that attempt problem line without any randomization?
What is the largest number less than 2^64 which has exactly 90 positive divisors ?
