First phase is the puzzle they email to you. Reasonable one. I brute-forced a solution but there's probably a smarter way to do it.

They don't care about your language; but try to get it to solve the problem in under 10 seconds (if you're doing this in C/C++, shoot for even faster )

If your solution is satisfactory, they'll schedule an in-person interview for you. For the in-person interview, you will probably have 2 technical interviews. You should aim for finishing them all else your chances are severely reduced.

Integrity so I can't divulge. However, if you're an above average programmer, you'll be fine.