While migrating servers no one was creating problems?
I thought we can have multiple rounds which will be rated for all as there was enough time to create problems which can rated for all.

The Input Format in Split and ADD is wrongly mentioned.
The line of the test case contains, $$$N, L$$$ and $$$R$$$, but in the problem input format, $$$N$$$ and $$$K$$$ are mentioned!

Can we solve PIARQ using Mo's algorithm in $$$\mathcal{O}(n\sqrt{n})$$$ time?

It seems from the TL that we can, but my submission gives TLE.

Edit: I guess I should have set the block size to $$$600$$$, instead of $$$400, 500$$$. Bruh.

A quick request: For future contests, please announce which divisions will be rated with more than eight hours' notice. Many contestants' decisions to participate could reasonably depend on whether the round will be rated, not just because they care about their rating but because (a) the fact that a round is rated for Div. 1 signals that there will be challenging problems targeted at high-level contestants and (b) rated rounds attract a higher-quality competition pool. Providing over a week's notice like Codeforces generally does for Div. 1 rounds would be ideal, but at the very least, contestants should be able to go to sleep the night before a contest knowing whether or not they should expect to participate in a rated round the next day.

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