using System;

public class Program

{

    public enum Someenum { A, B, C }

    public static void Foo( dynamic obj ){ Console.WriteLine("1");}

    public static void Foo( Someenum e ){ Console.WriteLine("2");}

    public static void Foo<T>( T obj ){ Console.WriteLine("3");}

    public static void Main()

    {

        Foo(Someenum.A);

        Foo((object)Someenum.A);

        Foo((int)Someenum.A);

    }

}