If I try to transform a PUBO
x_0 x_1 x_2
to QUBO, certain documentation says that I need to add the constraint
6 x_3 + 2 x_0 x_1 - 4 x_0 x_3 - 4 x_1 x_3
However, I need to arrive to a minima (there in this case 0) or a maxima (in this case 1)
Usually, I use a function to minimize so I negate my cost function to get a maxima.
But with the above cost function and constraint, I am not arriving anywhere to get a minima or a maxima with the same cost function + constraint (changing sign accordingly)
Any idea?