Flossing Before or After..

So Ive been trying to find the answer to this one question.. Do I floss before or after I brush? Cause if you floss before, you are removing all of the crap stuck between your teeth before you brush and then it might help your toothbrush work at getting in between your teeth.. But on the other hand, Flossing after you brush gets all of the toothpaste out from in between your teeth that comes while brushing. I would do both before and after, but that just seems like an awful waste of floss. You don’t have to floss all your teeth…..just the ones you want to keep.