using System;
using System.Diagnostics;
using System.Threading;

namespace sample1
{
    class Program
    {
        static void Main(string[] args)
        {
            Stopwatch time = new Stopwatch();
            time.Start();
            double i = 0;
            while (i < 10000000000) {
                Math.Sin(i);
                i++;
            }
            time.Stop();

            Console.WriteLine(time.Elapsed.TotalMilliseconds);
        }
    }
}