using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TimespanTest
{
    class Program
    {
        static void Main(string[] args)
        {
            DateTime A = DateTime.Now;
            System.Threading.Thread.Sleep(100);

            TimeSpan B = DateTime.Now.Subtract(A);
            System.Threading.Thread.Sleep(1000);
            TimeSpan C = DateTime.Now.Subtract(A);

            TimeSpan D = C.Subtract(B);

            Console.WriteLine("{0}", D.ToString());

            return ;
        }
    }
}