[gecode-users] Scheduling

[Alin]

Guido Tack <tack at ...> writes:

> 
> Did you use the version of unary with optional tasks?  Otherwise, the same
start time up in different
> unary constends raints, which is quite likely to be unsatisfiable.
> 
> Guido
> 

I've tried to use the unary version with optional tasks,
but I don't quite understand how it would help
why should I set a certain task to be optional if I have reification ?