A disc  of  radius  $\frac{\alpha }{4}$  having  a uniformly  distributed  charge  6C  is placed in the xy-plane  with its  centre  at  $(\frac{-a}{2},0,0)$ .A  rod of  length $\alpha$  carrying  a uniformly  distributed charge  8c  is placed  on the X-axis  from  $x=\frac{\alpha }{4}tox=\frac{5\alpha }{4}$.Two point charges  -7C  and 3c  are placed at $(\frac{\alpha }{4},\frac{-a}{4},0)$ and  $(\frac{-3a}{4},\frac{3a}{4},0)$, respectively . consider  a cubical surface  formed  by six surface s  $x=\pm \frac{a}{2},y=\pm \frac{a}{2},z=\pm \frac{a}{2}.$.The electric  fiux  through this cubic  surface  is