The recruiters were very nice and efficient. I had four interviews, and the process took almost 4-5 hours.

While the recruiter's hints in the emails were not very helpful, as they differed significantly from the actual interview problems, I still thank them for their assistance throughout the entire process. Overall, it was a nice experience.

Not quite difficult if you had seen similar problems before, but for me, some of them were unexpected. I expected to see problems in algorithms and data structures, like trees and graphs. They took me some time to figure out.