使用matlab / octave在线性编程中编程分支并绑定用于轴平行线的点

I am trying to implement branch and bound technique for covering points with axis parallel lines. for each sub problem I am considering my LP solution as the LB and iterative rounding solution as the UB. At first I am considering a fractional valued variable (after applying LP) and for 0 and 1 value I am considering SP1 and SP2 as my sub-problems. for each SP1 I have UB1 and LB1 and for each SP2 I have UB2 and LB2 as mentioned earlier. Then I am checkingI am trying to implement branch and bound techn