enum types in C#

Question

I read this statement in a C# book.

Enumerations do not necessarily need to follow a sequential ordering, and need not have unique values.

If I understand that statement, it means one of this is acceptable (I don't know which):

1.

enum EmpType
{
    Manager = 1,
    Grunt = 1,
    Contractor = 100,
    VicePresident = 9
}

2.

enum EmpType
{
    Manager = 10,
    Manager = 1,
    Contractor = 100,
    VicePresident = 9
}

Can someone please explain to me? I thought C# was supposed to be a subset of C/C++.

Answer 1

The first one would be valid, you may have duplicate Values not duplicate Names