I don't see any better in your solution...

There is no worse deaf than the one who does not want to hear...

Lots of guys passed the Rust kata so I am sure there is a problem in your code.
Avoid to mutate the input; don't sort too soon; rather square elements of a instead of taking the square root of elements of b (you are introducing float approximations).
Good luck and notice than downvoting others' answers doesnt help:-)

Time it?

@gvilardo: you should have read the description with precision.

?

Not very honest:-)

Your arrays are so big that Python has no more ressources to answer.

@vivi00790: better to write correctly before giving English lessons.

When you want to give lessons, write correctly: "occurances" should be "occurences"...

Post really poor. Look at the meaning of increase...

@CodeMouse92: not an issue of the kata. Your code is wrong somewhere.

Think of NORTH, SOUTH, WEST, EAST as chemical products. When NORTH and SOUTH or WEST and EAST are side by side they annihilate each other; they don't if they are separated by another element.

Print the input.

Parameters are "int" so use only "ints" and no /.