So this is going to be equal to, up here it's going to be 1 plus 0 plus 1. So that's going to be equal to 2 plus, and this is going to be equal to 1 plus 1 plus 0, so another 2. Plus, this is going to be equal to 1 plus 0 plus 1. 7 minus 6 is 1, squared is 1. So that's 2 over here. So this is going to be equal to, our sum of squares within, I should say, is 6. So one way to think about it, our total variation was 30.