This - the only downside to a constraint solver is it's usually slower. If you want them to write a fast algorithm, then specify that. Have an actual metric f

This - the only downside to a constraint solver is it's usually slower. If you want them to write a fast algorithm, then specify that. Have an actual metric for it, if they can pass it with the declarative language, then great. If not, they should have written a more complicated algorithm.