public Tuple <double, double> TotalTime()
{
return(new Tuple <double, double>(
Configurations.Aggregate(0.0, (i, s) => i + (s.Result == null ? 0.0 : s.Result.Time1)),
Configurations.Aggregate(0.0, (i, s) => i + (s.Result == null ? 0.0 : s.Result.Time2))
));
}