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

public static class Permi
{
    public static IEnumerable<IEnumerable<T>> Perm<T>(this IEnumerable<T> items, int? k = null)
    {
        if (k == null) k = items.Count();
        if (k == 0) yield return Enumerable.Empty<T>();
        else
        {
            var i = 0;
            foreach (var x in items)
            {
                var xs = items.Where((_, index) => i != index);
                foreach (var c in Perm(xs, k - 1))
                    yield return c.Before(x);
                i++;
            }
        }
    }
    public static IEnumerable<T> Before<T>(this IEnumerable<T> items, T first)
    {
        yield return first;
        foreach (var i in items) yield return i;
    }
}

public class P
{
    public int x { get; set; }
    public int y { get; set; }
}

public class Hello
{
    public static P[] ps;
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        ps = new P[3];
        for (int i = 0; i < 3; i++)
            ps[i] = new P { x = int.Parse(line[i * 2]), y = int.Parse(line[i * 2 + 1]) };
        getAns();

    }
    static void getAns()
    {
        var a = new int[] { 0, 1, 2 }.Perm();
        foreach (var x in a)
        {
            var b = x.ToArray();
            var res = check(b);
            if (res.x != 999) { Console.WriteLine("{0} {1}", res.x, res.y); return; }
        }
        Console.WriteLine(-1);
    }
    static P check(int[] a)
    {
        var res = new P();
        var p21x = ps[a[1]].x - ps[a[2]].x;
        var p21y = ps[a[1]].y - ps[a[2]].y;
        var p10x = ps[a[0]].x - ps[a[1]].x;
        var p10y = ps[a[0]].y - ps[a[1]].y;
        if (p21x * p10x + p21y * p10y != 0) { res.x = 999; return res; }
        if (p21x * p21x + p21y * p21y != p10x * p10x + p10y * p10y)
        { res.x = 999; return res; }
        var p3x = p10x + ps[a[2]].x;
        var p3y = p10y + ps[a[2]].y;
        res.x = p3x;
        res.y = p3y;
        return res;
    }
}