In order to start working in groups of two, you have to first complete the map "TerrainZ" on your own (execution time is not important).
Provide a link to your Fork of the Repository in the text below, and the commit "code/SHA" (something that looks like this b34906944efa122795531cd17c4bfa93e41c550e) that provides a solution to TerrainZ, so that it can be verified.