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using System;
public class C
{
public static readonly C Token = new C ();
public static C operator & (C set, E value)
{
return Token;
}
public static implicit operator E (C c)
{
throw new ApplicationException ();
}
}
public enum E
{
Item = 2
}
enum E2
{
A = 0,
B,
C
}
class FooClass
{
public static int Main ()
{
C m = new C ();
var x = E.Item;
var res = m & x;
if (res != C.Token)
return 1;
res = m & E.Item;
if (res != C.Token)
return 2;
E2 e2 = E2.C;
int day1 = e2 - E2.A;
return 0;
}
}
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