gonna find a bit sequence such that when you look at the corresponding interval that we map to it which is given here by example that entire interval should fall inside end of all we're trying to encode leaving no I'm bagheera T which in the ball it belongs to and will not be a prefixed or anything else to work out the details of this it turns out you get an overhead of to possibly instead of 1 but that's actually pretty good because when we do this there's kind of arithmetic coding we can code arbitrary many symbols so the overhead of plus two