The legends say that participating Blitz Rounds , Increases your choice of getting a higher rank on competitions in general.

In the honor of kimononawa , the writer of Eolymp Blitz 12 , and the main lore goes to D. Permutation Minimize Product where it used the same idea and framework of Today's 2D/1B .

Editorial of The origin problem : Editorial

So , Indeed If you've seen the task (the technique in general tbf) , then it's very doable in this case.

The problems are similar because they both are using the fact that if $$$a \times b \lt n$$$ then one of $$$a$$$ and $$$b$$$ should be less than $$$\sqrt{n}$$$, hence in each pair $$$(i,j)$$$ one of $$$a_i$$$ or $$$a_j$$$ is less than $$$\sqrt{n}$$$