using System;

using System.Diagnostics;

public class Program

{

    public static void Main()

    {

        Stopwatch s = new Stopwatch();

​

        double x = 3.12342435246d;

        double y;

​

        s.Start();

​

        for (int i = 0; i < 10e7; i++)

            y = x * x * x;

​

        Console.WriteLine(s.Elapsed);

        s.Restart();

​

        for (int i = 0; i < 10e7; i++)

            y = Math.Pow(x, 3);

​

        Console.WriteLine(s.Elapsed);

    }

}