using System;


public class Program
{
    public void Solve()
    {
        var sc = new Scanner();
        int N = sc.NextInt();
        long[] A = new long[N];
        for (int i = 0; i < N; i++)
        {
            A[i] = sc.NextInt();
        }

        Array.Sort(A);

        long minus = 0;
        long plus = 0;
        if (N % 2 == 0)
        {
            for (int i = 0; i < N / 2; i++)
            {
                minus += A[i] * 2;
                plus += A[i + N / 2] * 2;
            }

            plus -= A[N / 2];
            minus -= A[N / 2 - 1];

        }
        else
        {
            // mpmpm 2(A[N-1 ~ N/2 + 1]) - 2(A[N/2 ~ 0]) + A[N/2] + A[N/2-1] 
            
            // pmpmp 2(A[N-1 ~ N/2]) - 2(A[N-2-1 ~ 0]) - A[N/2] - A[N/2 + 1]

            //       A[N/2+1] - 2A(N/2) + A[N/2 -1]

            if (A[N / 2 + 1] + A[N / 2 - 1] - 2 * A[N / 2] > 0)
            {
                //mpmpm

                
                for (int i = 0; i < N; i++)
                {
                    if (i <= N / 2)
                    {
                        minus+=A[i]*2;
                    }
                    else
                    {
                        plus += A[i]*2;
                    }
                }

                minus -= A[N / 2];
                minus -= A[N / 2 - 1];
            }
            else
            {
                for (int i = 0; i < N; i++)
                {
                    if (i < N / 2)
                    {
                        minus+=A[i]*2;
                    }
                    else
                    {
                        plus += A[i]*2;
                    }
                }

                plus -= A[N / 2];
                plus -= A[N / 2 + 1];
                // pmpmp
            }
        }
        Console.WriteLine(plus - minus);
    }


    public static void Main(string[] args)
    {
        new Program().Solve();
    }
}

class Scanner
{
    public Scanner()
    {
        _pos = 0;
        _line = new string[0];
    }

    const char Separator = ' ';
    private int _pos;
    private string[] _line;

    #region スペース区切りで取得

    public string Next()
    {
        if (_pos >= _line.Length)
        {
            _line = Console.ReadLine().Split(Separator);
            _pos = 0;
        }

        return _line[_pos++];
    }

    public int NextInt()
    {
        return int.Parse(Next());
    }

    public long NextLong()
    {
        return long.Parse(Next());
    }

    public double NextDouble()
    {
        return double.Parse(Next());
    }

    #endregion

    #region 型変換

    private int[] ToIntArray(string[] array)
    {
        var result = new int[array.Length];
        for (int i = 0; i < array.Length; i++)
        {
            result[i] = int.Parse(array[i]);
        }

        return result;
    }

    private long[] ToLongArray(string[] array)
    {
        var result = new long[array.Length];
        for (int i = 0; i < array.Length; i++)
        {
            result[i] = long.Parse(array[i]);
        }

        return result;
    }

    private double[] ToDoubleArray(string[] array)
    {
        var result = new double[array.Length];
        for (int i = 0; i < array.Length; i++)
        {
            result[i] = double.Parse(array[i]);
        }

        return result;
    }

    #endregion

    #region 配列取得

    public string[] Array()
    {
        if (_pos >= _line.Length)
            _line = Console.ReadLine().Split(Separator);

        _pos = _line.Length;
        return _line;
    }

    public int[] IntArray()
    {
        return ToIntArray(Array());
    }

    public long[] LongArray()
    {
        return ToLongArray(Array());
    }

    public double[] DoubleArray()
    {
        return ToDoubleArray(Array());
    }

    #endregion
}

Measured memory_bytes: 18004