namespace ConsoleApplication1
{
    using System;
    using System.Collections.Generic;
    using System.Diagnostics;
    using System.Linq;
    using System.Text;

    class Point2D
    {
        public int x, y;
    }

    struct Point2
    {
        public Point2(int x, int y)
        {
            this.x = x;
            this.y = y;
        }

        public int x, y;
    }

    public class Program
    {
        public static void Main(string[] args)
        {
            {
                var sw = Stopwatch.StartNew();
                int[] v = new int[1 << 24];
                for (int i = 0; i != v.Length; ++i)
                    v[i] = 1;
                sw.Stop();
                Console.WriteLine(v[200] + " plain_array elapsed = " + sw.Elapsed.TotalSeconds);
            }
            {
                var sw = Stopwatch.StartNew();
                Point2D[] v = new Point2D[1 << 23];
                for (int i = 0; i != v.Length; ++i)
                    v[i] = new Point2D();
                sw.Stop();
                Console.WriteLine(v[100].x + " structured_array elapsed = " + sw.Elapsed.TotalSeconds);
            }
            {
                var sw = Stopwatch.StartNew();
                Point2[] v = new Point2[1 << 23];
                for (int i = 0; i != v.Length; ++i)
                    v[i] = new Point2(1, 2);
                sw.Stop();
                Console.WriteLine(v[100].x + " struct_array  elapsed = " + sw.Elapsed.TotalSeconds);
            }
        }
    }
}