WBCube
Regular
Honestly, with a whole lot of practice, you can probably get there. It's good to always learn new algs or subsets, whatever. Learn some COLL or ELL perhaps if you're at that stage.
I've been doing at least an average of 50 every day, and it really gets your times down, although most people probably don't have the time to do that...
I've been doing at least an average of 50 every day, and it really gets your times down, although most people probably don't have the time to do that...