namespace AtCoder;

#nullable enable

using System.Numerics;

static class Extensions
{
    public static T[] Repeat<T>(this int time, Func<T> F) => Enumerable.Range(0, time).Select(_ => F()).ToArray();
}

class AtCoder
{
    object? Solve()
    {
        var n = Int();
        var k = Int();
        var az = new List<(int, int, int)>();
        (int[], int) F(int x, int t)
        {
            var res = new int[2];
            if (x <= k)
            {
                res[t] += x;
                return (res, t ^ 1);
            }
            var x0 = (x + 1) / 2;
            var x1 = x - x0;
            var (m0, t0) = F(x0, t ^ 1);
            res[0] += m0[0];
            res[1] += m0[1];
            if (x1 <= k)
            {
                res[t0] += x1;
                return (res, t0 ^ 1);
            }
            var (m1, t1) = F(x1, t0 ^ 1);
            res[0] += m1[0];
            res[1] += m1[1];
            return (res, t1);
        }
        for (var i = 0; i < n; i++)
        {
            var a = Int();
            var (m, t) = F(a, 0);
            var m0 = m[0];
            var m1 = m[1];
            az.Add((m1 - m0, m0, m1));
        }
        az.Sort();
        var ans = 0L;
        var ta = 0;
        foreach (var (_, v0, v1) in az)
        {
            if (ta == 0) ans += v0;
            else ans += v1;
            ta ^= 1;
        }
        return ans;
    }

    public static void Main() => new AtCoder().Run();
    public void Run()
    {
        var res = Solve();
        if (res != null)
        {
            if (res is bool yes) res = yes ? "Yes" : "No";
            sw.WriteLine(res);
        }
        sw.Flush();
    }

    string[] input = Array.Empty<string>();
    int iter = 0;
    readonly StreamWriter sw = new(Console.OpenStandardOutput()) { AutoFlush = false };

    string String()
    {
        while (iter >= input.Length) (input, iter) = (Console.ReadLine()!.Split(' '), 0);
        return input[iter++];
    }
    T Input<T>() where T : IParsable<T> => T.Parse(String(), null);
    int Int() => Input<int>();
    void Out(object? x, string? separator = null)
    {
        separator ??= Environment.NewLine;
        if (x is System.Collections.IEnumerable obj and not string)
        {
            var firstLine = true;
            foreach (var item in obj)
            {
                if (!firstLine) sw.Write(separator);
                firstLine = false;
                sw.Write(item);
            }
        }
        else sw.Write(x);
        sw.WriteLine();
    }
}