This feature will be available until January 10 (inclusive).

(Bad English, so I used AI.)

I know there are other posts about this. I listed some bots here. I'm also wondering why some of these accounts were not banned earlier.

Bots with a UUID in their code.

wtehjnyu426 nxaadm9648 zwatti772 aqkwgw19463 dftvmz000 kxwzyd795 rbaglkv2489 ndxxau86464 ohfwwv873 tujjmglhyu41495 hkebxfxb9714 cexfkoe511 zsphrmp855 xeyjmne82169 jpzqgrs59098 jttrfprg748

Bots appear to be from the same LLM.

They have random names(the name length is always 10), an empty first line in their code, and they attempt problems sequentially by contest ID (e.g., one attempted IDs 835–909). Most importantly, these bots submit many problems at once.

Since these accounts are registered and abandoned within hours, I think additional registration verification is needed.

ipau8609d3 9oxie5g474 9oxie5g474 agxs5cgp w4ac5862jt d83f0gw083 wa2rgtn9g6 2xwmxvegk9 x1sae0mm1r

Smarter bots, can only be identified with AI comments.

mnhsri975 aefnvo7863 fqoijwp715 bfsbitu5136 paegcfltt2424 kntzqjnpts0688 mpvfmavm51762 doooxwbg6759 jdkutcidal3299 ccvqfotgdc353 wetogec7678 xquqbn735 ynnpmulbi657 tcjsib213 gpiomvultc76426 ffgueax43597 mnmpwi1916 vtfbhzja504 olzyvrql84391 vkttdqsp115

Each time I update this post, I find new bot accounts. UPD: It seems no bot now. UPD2: some bots again...

Maybe I should @MikeMirzayanov?

UPD2: Merged CarrotPlane's comment.

UPD4: Merged bots here.

UPD5: Merged bots here.

UPD9: Merged bots here

UPD1&3&6&7&8&10&11&12&13:Removed banned bots(ban 100+ now :), but still remain some here...).

This is my classmate:yjf1225

Can MikeMirzayanov explain this?

You can see them in https://mirror.codeforces.com/problemset/status