Hightail is an automatic tester for programming contests such as
CodeForces rounds. It will parse the problem statement, extract
sample test cases (inputs and outputs) from it, and verify the
correctness of your program against them. It is built to provide
maximum automation and to relieve the contestant as much as possible.
Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.