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

public class AtCoderB
{
    static void Main()
    {
        var sc = new Scanner();

        long n = sc.NextInt();
        Tuple<long, long>[] nums = new Tuple<long, long>[n];

        for (long i = 0; i < n; i++)
        {
            nums[i] = Tuple.Create(i, sc.NextLong());
        }

        nums = nums.OrderByDescending(item => item.Item2).ToArray();

        bool[] consumu = new bool[n];

        long answer = 0;
        for (int i = 0; i < n; i++)
        {
            var item = nums[i];
            long tmpAnswer = 0;
            long tmpIndex = 0;
            for (int j = 0; j < n; j++)
            {
                if (consumu[j])
                {
                    continue;
                }
                long happy = item.Item2 * Math.Abs(item.Item1 - j);
                if (tmpAnswer < happy)
                {
                    tmpAnswer = happy;
                    tmpIndex = j;
                }
            }
            consumu[tmpIndex] = true;
            answer += tmpAnswer;
        }

        Console.WriteLine(answer);
    }

    class Scanner
    {
        private string[] _line;
        private int _index;
        private const char Separator = ' ';

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

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

            return _line[_index++];
        }

        public int NextInt() => int.Parse(Next());
        public long NextLong() => long.Parse(Next());
        public double NextDouble() => double.Parse(Next());
        public decimal NextDecimal() => decimal.Parse(Next());
        public char NextChar() => Next()[0];
        public char[] NextCharArray() => Next().ToCharArray();

        public string[] Array()
        {
            _line = Console.ReadLine().Split(Separator);
            _index = _line.Length;
            return _line;
        }

        public int[] IntArray() => Array().Select(int.Parse).ToArray();
        public long[] LongArray() => Array().Select(long.Parse).ToArray();
        public double[] DoubleArray() => Array().Select(double.Parse).ToArray();
        public decimal[] DecimalArray() => Array().Select(decimal.Parse).ToArray();
    }
}