Does the first cube sets to the value of (0,0)?

which means that for example for a 2x2 talbe you have maximum of 3 cubes to add to the sum?

two facts: p(0,0)=0, and x+0=x

which means that for example for a 2x2 talbe you have maximum of 3 cubes to add to the sum?

two facts: p(0,0)=0, and x+0=x