Update: All is done. Thanks sir MikeMirzayanov.I really appreciate your great efforts.

A few years ago, div2 C difficulty was around 1600 — 1800, recently, it has been around 1200 — 1400.

Is it because of the great progress in people's levels? of course not.

The main reason is the cheaters.

I admit that their cheating doesn't affect me or some others, but what about beginners?

I found too many cheaters in the last edu round (also C) with a 100% identical submissions, I waited for them to be skipped but nothing happened! This the main reason I'm writing this blog. So, MikeMirzayanov please do something.

Below are some samples of identical submissions for div2 C -> last round

243655557

243639150

243640557

243646098

243647241

243642433

243642726

243649121

243647278

243637041

243641264

243648749

243646449

243629043

243639381

243639612

243651668

243631869

243638867

243631485

243630405

243629557

243624199

243645487

243645947

243622983

243634893

If I'm wrong with any submission, please text me.

I know this blog will be downvoted by cheaters, but I don't care.