using System;
public class Test
{
class A {}
class B : A {}
class C : A {}
public static void Main()
{
A a1b = new B(), a2c = new C(), a3b = new B();
Console.WriteLine(a1b.GetType() == a2c.GetType());
Console.WriteLine(a1b.GetType() == a3b.GetType());
}
}
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