I first had a technical exam that contained two major questions in algorithms and a minor question in Python. This was to select those who knew this specific subject in communication networks.

The next level was a frontal interview with the team leader. This also contained a technical question, which I didn't pass. I don't know why exactly, because I thought my answers were good.

Jeremy has grown trees for many years. It was time to chop some of them and trim them so they would be aesthetically pleasing to him. His idea of aesthetics is making the trees go low and high in a zig-zag shape. So it might look something like so: |│|│|│|. Sadly, Jeremy is also a computer scientist, and as a computer scientist, he is VERY lazy. Find an algorithm that will let Jeremy know the minimum amount of trees he might need to trim to make it look aesthetically pleasing.