These files serve to give you a sense of how to do, iff, you feel lost in solving the problem.
Don't copy and paste any of these files, try to solve any problems by yourself.
- Level 1
- Level 2
- Level 3
It has been 6 months since I uploaded a solution and when I decided to go back to solving challenges, the service was down, the foo.bar URL redirects to Google Careers page.
Looking for an answer I found a thread in Google Search Help that might explain the problem.
Maybe it will come back, maybe it won't.