Hi KAN,

I just woke up and opened my Codeforces account, and I received multiple system messages saying that my code is similar to others. As a result, all of my solutions have been skipped.

I’m really confused and concerned because I wrote my solutions on my own. I also posted a blog explaining my situation to provide more context.

I would really appreciate it if you could take a look at my case and help me understand what happened.

Thank you for your time.

My code is not AI and in my 18 or so contests ive never got a skip, please look into, what line of my code appears unusual?

KAN, I came across your comment while trying to understand the AI-related disables, and I wanted to explain my own situation because there are a few things that may have been interpreted incorrectly.

My account np254 was disabled after Round 1121. I did not use AI assistance, receive solutions/help from anyone, or share my solutions during the contest.

There are three possible concerns I can think of:

1. The A/B submissions: After my A solution was accepted, I used the browser's Back button to return to the previous Codeforces submission/editor page. Problem A was still selected. I then wrote my B solution from scratch in the Codeforces editor, but forgot that A was still selected and accidentally submitted that code under A. I realized the mistake immediately, changed the selected problem to B, and submitted the same B solution again, which was accepted.

So the two submissions around the same time were not two different solutions or code being transferred from somewhere else. It was the same B solution that I had just written in the Codeforces editor, first submitted accidentally while A was selected, followed immediately by the correct B submission.

2. Code similarity/plagiarism: I have a very consistent coding style across my previous submissions. My formatting, variable naming, loop structures, conditions, input-reading patterns, and overall code structure are similar across my older Codeforces submissions and my Round 1121 code. For example, the same do...while input-reading pattern appears in my submissions from before Round 1121. I am completely willing for my historical submissions to be compared against my Round 1121 code.

3. AI-generated code: I did not use AI during the contest. My actual contest performance was A, B and C solved, with an incorrect attempt at D. A/B/C were problems I was capable of solving, while my D approach was simply incorrect. I understand that this alone cannot prove authorship, but I believe the complete contest behavior should be considered rather than looking at isolated submissions.

I am not asking anyone to simply take my word for it. If there is any specific submission, code pattern, detection result, or other issue that triggered the disablement, please let me know. I am ready to explain my approach, reasoning, implementation decisions, and even the thinking behind individual lines of my code for every Round 1121 submission.

If something else was triggered apart from these possibilities, I am also completely willing to address it and provide whatever justification or evidence is needed.

I respect the rules and understand why Codeforces has to investigate these cases. I am only asking for the opportunity to have my specific case reviewed based on the actual evidence.