In my problem, *N* = set of nodes, *s Є N* = index used for sources, *d Є N* = index used for destinations.

*Z _{sd} = 1 ,* if the path between

*(s )*and

*(d )*is disrupted. The problem has to be iterated (

*w)*times. I have to initialize one notation in cplex c++ concert technology. The notaion is

*Z _{w} = {(s,d) Є NXN|Z_{sdw} = 1}:*indices for disrupted flows in at iteration

*(w).*

I am not able to initialize for *(Z _{w}).* Thanks for any help.