most shells will accept outputting from a silent command to a file, e.g. :> foo.txt (where : is the posix synonym to the true command)

Nicely done! I have a CLI tool that does sth similar (input download, answer submissions): https://github.com/tranzystorekk/arrive

Oh boy, how can i forget 2019 and the whole series of “intcode” challenges!

You had a growing specification of a sorta-pcode virtual computer, opcodes, etc. Your input was the titular intcode, a list of integers representing instructions and you had to execute that code and use that execution to solve the bigger challenge, e.g. play a simple one-sided Pong!

But nobody came.