using System;

​

public class Program

{

    public static void Main()

    {

        var a = "ab" + "c";

        var b = "a" + "bc";

        var c = "abc";

        Console.WriteLine(a != b);

        Console.WriteLine(a != c);

        Console.WriteLine(a.GetHashCode());

        Console.WriteLine(b.GetHashCode());

        Console.WriteLine(c.GetHashCode());

        Console.WriteLine(a.GetHashCode() == b.GetHashCode());

        Console.WriteLine(a.GetHashCode() == c.GetHashCode());

    }

}