I give this kind of "homework" to candidates where I'm unsure if they can actually write a working program. These candidates usually have a CS or engineering de

I give this kind of "homework" to candidates where I'm unsure if they can actually write a working program. These candidates usually have a CS or engineering degree, but only some simulation, data science or machine learning projects from school on their resume. I don't really care about style but they have to be able to produce a program that can be started, does its job for an arbitrary amount of time before being shutdown again and doesn't crash and burn on the first non-perfect input.