I applied online. The process took 1 day.

Horrible! During my "Live" (why quoted - below) Coding Challenge, while working on the second task, I had to fix THEIR own issues with the testing system:

• their parser of the input data was NOT working, thus I had to replace its logic with the hardcoded test data.
• the pre-defined arguments for the function you're expected to write were not enough to solve the issue (specifically, the only argument provided to the function-to-be-implemented was of type "int []". It's impossible to figure out the size of a C-array in C++ without explicitly providing it e.g. as a second argument. Or, you should use std::vector instead) Finally, when I submitted my second task to the system I got "timeout" response, even though there were still some seconds left and I spent last minutes writing comments for them to fix their(!) issues.

Another weird thing was that in their email it's stated that the interview would be "held over a video conference. During the interview, you will be asked to share your screen and webcam", but in fact no one contacted me at all, I solved the challenge on my own, without any web-conference/web-cam/talking/chatting. The only "live" element was the timer, preventing me from spending more than half an hour on this stupid platform.

1. Rotating an array.

2. Calculating product of all elements of an array except i.