Art & Logic interview questions

They emailed with a challenge (2 parts). Part 1 must be submitted in a week. It can take up to few hours but as per them a skilled developer would take 1 hour or so. It requires brushing up some concepts you studies in school and may not have used recently in your job. When combined with that it eats up some time.

Total scam. Was given a series of time-consuming challenges which took several weeks between submissions and approvals. In the end I was told that no job was actually available, but I had earned the privilege of submitting my profile to their database and be interviewed when an actual position arose. Total waste of time.