#define PROFILE

using System;
using System.Diagnostics;
using System.Numerics;

namespace profiletest
{
	class Program
	{
		static void Main(string[] args)
		{
			Stopwatch total = Stopwatch.StartNew();
#if PROFILE
			Stopwatch initn = new Stopwatch();
			Stopwatch initf = new Stopwatch();
			Stopwatch loop = new Stopwatch();
			Stopwatch body = new Stopwatch();
			initn.Start();
#endif
			int n = 100;
#if PROFILE
			initn.Stop();
			initf.Start();
#endif
			BigInteger f = 1;
#if PROFILE
			initf.Stop();
			loop.Start();
#endif
			for (int i = n; i > 1; i--)
			{
#if PROFILE
				loop.Stop();
				body.Start();
#endif
				f *= i;
#if PROFILE
				body.Stop();
				loop.Start();
#endif
			}
#if PROFILE
			loop.Stop();
#endif
			total.Stop();
			Console.WriteLine(f);
			Console.ReadLine();
			Console.WriteLine("             Line             |  Ticks");
			Console.WriteLine("------------------------------|----------");
			Console.WriteLine("                              |");
#if PROFILE
			Console.WriteLine("int n = 100;                  |{0,10}", initn.ElapsedTicks);
			Console.WriteLine("BigInteger f = 1;             |{0,10}", initf.ElapsedTicks);
			Console.WriteLine("for (int i = n; i > 1; i--)   |{0,10}", loop.ElapsedTicks);
			Console.WriteLine("{                             |");
			Console.WriteLine("    f *= i;                   |{0,10}", body.ElapsedTicks);
			Console.WriteLine("}                             |");
			Console.WriteLine("                              |");
#endif
			Console.WriteLine("Total time:                   |{0,10}", total.ElapsedTicks);
#if PROFILE
			Console.WriteLine("Stopwatch overhead:           |{0,10}", total.ElapsedTicks - initn.ElapsedTicks - initf.ElapsedTicks - loop.ElapsedTicks - body.ElapsedTicks);
#endif
			Console.ReadLine();
		}
	}
}