I'm always reminded of the aphorism: If my solution doesn't have to be correct, `return 0` runs in a couple of cycles and uses zero additional memory. The comp

I'm always reminded of the aphorism: If my solution doesn't have to be correct, `return 0` runs in a couple of cycles and uses zero additional memory. The complication, of course, is (as the original author explains) that - with respect to some problems - there are degrees of correctness in the solution space, and some specific, limited trade-offs may be acceptable.