Yo So apparently I found out this marshadow_ninja guy and he gain my suspicion through his code.

Problem B: Instant change of coding style, using T instead of tt as his previous problem A submission, variable name starts to get longer. Also this style is very VERY similar to ChatGPT and also in competitive progamming who will like to use caps lock letters and variable i mean it take lot more time

Problem C : "onesAbove" array, interesting name tbh. Also the logic and style is the similar to ChatGPT and same thing again can y'all tell me you will prefer writing o_a or oa as variable name if it is used 10+ time in code or you will prefer writing onesAbove as var name. intially_beauty bro i would have used ib as var name wtf use this much bigger names i suppose his hands had potion that make him immune to pain

Problem D : He did this BEFORE C, how good is he? Same style as ChatGPT.

(using THIS

auto state_id = [&](int i, int dir, int r){return (i*2 + dir) * k + r;};

is what ChatGPT would do, yes i know there ARE people use this, but ChatGPT usually use this too, I'm just bringing up the issue.)

what!! he has 14 accepted solutions of contest in a row he never had a single wrong submissions in contests even for problem E1 .under 14 minutes bro managed to find logic and solve E.

Here's my friend's opinion about this

Look, he solved D1 in 44 minutes, C in 47 minutes. How can a person solved 2 problems in 3 minutes. Plus naming long variables takes a long time. And omg, constructing a struct for each testcases, nobodies that dumb. Plus in E, he's using: using pii = pair<int, int> while he doesn't use and it's not even a snippet. For those who don't know, it's the first time I have seen a function named llabs(), I have been into CP for a year now and haven't seen llabs() before. He even use different snippet for each code.

It's also suspicious that he went from solving 3 problem in edu div. 2 to 5 problems in div. 2 in 9 days.

UPD: prof cheater: KeveinDurant

It's not a joke, but this guy had compilation error in cpp then changed to py-py and got WA on test 1 then compilation error again then switched to cpp again and tle on test 27 then accepted in cpp also see this code https://mirror.codeforces.com/contest/2118/submission/324132381 is ai but the accepted submission and he switched between coding style's, looks like he is just perfect, it looks like he is proffesional cheater but made a mistake and reveled himself, but I don't like the fact that there are people with this high level of cheating skill.

UPD: https://mirror.codeforces.com/contest/2118/ by isharoy submission/324131542 suspicious submission they even went from solving 1 problem in div. 3 to solving 5 problems in div. 2 in 4 days lol