using System;
 
public class Rectangle
{
    public double Length { get; set; } = 1;
    public double Width { get; set; } = 1;
    public double Area { get; set; } = CalculateArea(1, 1);
 
    public static double CalculateArea(double length, double width)
    {
        return length * width;
    }
}
 
public class FingerPrint
{
  public DateTime TimeStamp { get; } = DateTime.UtcNow;
 
  public string User { get; } =
    System.Security.Principal.WindowsPrincipal.Current.Identity.Name;
 
  public string Process { get; } =
    System.Diagnostics.Process.GetCurrentProcess().ProcessName;
}
 
public class Test
{
	public static void Main()
	{
		// your code goes here
	}
}

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