using System;

public class Program

{

    public static void Main()

    {

        string hexdata= "010000002a0000002a0000002a000000002a000000002a000000002a000000002a1d2a0b09202a000023";

        int length = hexdata.Length;

        string deviceid = hexdata.Substring(0,2);

        Console.WriteLine(deviceid);

    }

}