Good day, Codeforces!

As you all already know, yesterday there was Div 4, and of course a LOT of people participated who were either gray or green. But another subtype participated: Cheaters. They participate in all contests and the easier the contest, the more of them there are. And what could be easier than Div 4, right?

Let's take a closer look at Problem F. We can solve it using a segment tree or a Fenwick tree, two pointers, or ordered_set<> (maybe there are other ways, but these are the ones we'll consider).

For example, I managed to find these retarded people who copied F from each other: P1R2I6, Navi4ok,Krekker0101, MisterCheese, and others.

Let me explain why I think that they copied from each other.

I don’t need to explain why Krekker0101 and Navi4ok copied each other because they had identical solutions!

But lets dig deeper.

MAIN REASON: Their solution absolutely similar, they just change their name of variables. (it means that all other reason are unnecessary, but nevermind)

You can check submission by yourself:

1) Guys with absolutely SIMILAR code: 239388070, 239386523

2) And others: 239371594, 239394487

I hope they got banned, or Div 4 become unrated for them!