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

namespace ConsoleApplication1
{
    /*
     * 179
     * 180
     * 178
     * 210
     * 275
     * 180
     * 187
     * 195
     * 183
     * 198
     * 平均=196.5
     */

    class Program
    {
        static void Main(string[] args)
        {
            foo a = new foo();
            Stopwatch sw = new Stopwatch();
            sw.Start();
            a.start();
            sw.Stop();
            Console.WriteLine(sw.ElapsedMilliseconds);
        }
    }

    class foo
    {
        int value = 0;
        public void start()
        {
            
            for (long i = 0; i < 1000000; i++)
            {
                AddToBitfield(ref value,  5, 31);
                AddToBitfield(ref value, 5, 31);
                AddToBitfield(ref value, 5, 31);
                AddToBitfield(ref value, 5, 31);
                AddToBitfield(ref value, 5, 31);
                AddToBitfield(ref value, 5, 31);

                ReadFromBitfield(ref value, 5);
                ReadFromBitfield(ref value, 5);
                ReadFromBitfield(ref value, 5);
                ReadFromBitfield(ref value, 5);
                ReadFromBitfield(ref value, 5);
            }
        }

        void AddToBitfield(ref int a, int bitCount, int value)
        {
            a *= bitCount;
            a += value;
        }

        int ReadFromBitfield(ref int a, int bitCount)
        {
            int value = a / bitCount;
            a -= value;
            return value;
        }
    }
}