The participant I'm referring to is:

Prototype1510

Submission

https://codeforces.me/contest/2247/submission/383359064

Screenshot

(https://drive.google.com/file/d/1J3rfKOxOfwAbEAqG06M7-tJRN8EYBJbx/view?usp=sharing)

Hi everyone!

Today, I'd like to hear the opinions of people who participated in this round or solved Problem F.

I noticed a contestant whose submission timeline caught my attention. During the contest, they submitted an accepted solution roughly every 30 minutes. They solved only Problems A and B before eventually getting an accepted solution on Problem F, which is a significant jump in difficulty.

To better understand how they solved it, I contacted them privately after the contest and politely asked them to explain their solution, including the main idea, the algorithm, and the implementation.

However, instead of receiving a technical explanation, the only reply I got was:"like u think"

After that response, I honestly didn't know what to think. It made me wonder whether there might be something unusual about the submission, but I also understand that this response alone does not prove any wrongdoing.

So I'd like to ask the community:

• Does this progression seem unusual to you?
• If someone legitimately solved Problem F, would you normally expect them to be able to explain the core idea afterward?
• Are there reasonable explanations that could account for this situation?

I'm not accusing anyone. I'm simply looking for objective opinions from experienced competitive programmers and participants of this round.

Thank you.