private DijkstraElement sigDefinitivo(List <DijkstraElement> VD)
{
return((
from DE in VD
where !DE.getIsDefinitive()
orderby DE.getWeigth() ascending
select DE
).First());
}
private bool allDefinitives(List <DijkstraElement> VD)
{
return(VD.Count(DE => DE.getIsDefinitive()) == VD.Count);
}