public static State MinusOneUnit(this StateSpace ss, IMDPState s, Route route)
{
IMDPState _s = s.Clone();
foreach (Product p in route)
{
foreach (Resource r in p)
{
if ((_s as State).Keys.Contains(r) && (_s as State)[r] > 0)
{
(_s as State)[r] -= 1;
}
}
}
return(ss.FirstOrDefault(i => i.Equals(_s)) as State);
}