There is a contest at AZsPCs which has started on 10 Dec 2016 and will end on 11 Mar 2017.
In AZsPCs you should submit just the output of your code(even if you have no code :D), and there is no need to submit your source code!
Anyway! Just register and try it, if you're interested :)
UPD: "AZsPCs" stands as an acronym for "Al Zimmermann's Programming Contests".