using System;
using System.Diagnostics;
using System.Linq;

namespace ParesTest
{
    internal class Program
    {
        private static void Main()
        {
            var t = new Stopwatch();
            var r = new Random();
            var data = Enumerable.Range(0, 100000000).Select(o => r.Next()).ToArray();
            int pares;

            t.Start();
            foreach (var x in data)
            { }
            t.Stop();
            Console.WriteLine($"Baseline {t.ElapsedTicks:N0} ticks");

            t.Start();
            pares = 0;
            foreach (var x in data)
                if ((x & 1) == 0) pares++;
            t.Stop();
            Console.WriteLine($"AND: {pares} pares en {t.ElapsedTicks:N0} ticks");

            t.Start();
            pares = 0;
            foreach (var x in data)
                if (x % 2 == 0) pares++;
            t.Stop();
            Console.WriteLine($"MOD: {pares} pares en {t.ElapsedTicks:N0} ticks");
        }
    }
}