Discussion About Maximum power

This is Discussion thread about Maximum power

I got the full question correct after submitting but i got only 50 points? why? whats the issue?

how can the max power be 20
we can select -18 and -13 na?

can you please explain me how 20 is coming as output

its the product of first 3 digits , 10,1,2 and -18 and -13 can be take as they dont form the subarray.

I am also facing this thing.