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lbest(i,i) = rbest(i,i) = best(i,i) = max{ 0, array[i] } ... lbest(i,k) }, where k = int((j+i)/2) rbest(i,j) = max{ rbest(i,k) + total(k+1,j), rbest(k+1,j) }, where k = int((j+i)/2)