static void Main(string[] args)
{
ProblemFactory problemFactory = new ProblemFactory();
BinaryLevelConfiguration binaryLevelConfig = new BinaryLevelConfiguration();
// register your factory functions
problemFactory.RegisterProblem <BinaryProblem>((level) => new BinaryProblem(binaryLevelConfig.GetProblemConfiguration(level)));
// consume them
IProblem problem1 = problemFactory.GenerateProblem <BinaryProblem>(Level.Easy);
IProblem problem2 = problemFactory.GenerateProblem <BinaryProblem>(Level.Hard);
}
