using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var map = NArr(n);
        var ans = 0;
        for (var i = 0; i < n; ++i) for (var j = i + 1; j < n; ++j)
        {
            var max = int.MinValue;
            var min = int.MaxValue;
            for (var k = 0; k < n; ++k)
            {
                if (i == k || j == k) continue;
                var op = OuterProduct(map[i][0] - map[k][0], map[i][1] - map[k][1], map[j][0] - map[k][0], map[j][1] - map[k][1]);
                max = Math.Max(max, op);
                min = Math.Min(min, op);
            }
            ans = Math.Max(ans, max - min);
        }
        WriteLine(ans);
    }
    static int OuterProduct(int ax, int ay, int bx, int by)
    {
        return ax * by - ay * bx;
    }
}