using System;

using System.Threading;         

using System.Diagnostics;

class A

{

    public void timee()

    {

        string ss="";

        if(ss.Length==0)

        {

            Console.WriteLine("True");

        }       

    }

    public void timew()

    {

        string ss="";

        if(ss.Equals(""))

        {

            Console.WriteLine("True");

        }

    }

}

public class Program

{

    public static void Main()

    {

        A g=new A();

        Stopwatch s=new Stopwatch();

        Thread t=new Thread(g.timee);

        s.Start();

        t.Start();

        t.Join();

        Console.WriteLine(s.ElapsedMilliseconds);

        s.Stop();

        s.Start();

        Thread t1=new Thread(g.timew);

        t1.Start();

        t1.Join();

        Console.WriteLine(s.ElapsedMilliseconds);

        s.Stop();

    }

}