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


class Magatro
{
    static XY[] points = new XY[3];
    static void Main()
    {
        int[] s = Console.ReadLine().Split(' ').Select(int.Parse).ToArray();
        for(int i = 0; i < 3; i++)
        {
            points[i] = new XY(s[i * 2], s[i * 2 + 1]);
        }
        for(int i = 0; i < 3; i++)
        {
            for(int j = 0; j < 3; j++)
            {
                for(int k = 0; k < 3; k++)
                {
                    if (i == j || i == k || k == j)
                    {
                        continue;
                    }
                    XY ve1 = points[i] - points[j];
                    XY ve2 = points[j] - points[k];
                    if(ve1==new XY(-ve2.Y, ve2.X))
                    {
                        XY ans = points[k] + ve1;
                        Console.WriteLine("{0} {1}", ans.X, ans.Y);
                        return;
                    }
                }
            }
        }
        Console.WriteLine(-1);
    }

}
struct XY
{
    public int X, Y;
    public XY(int x, int y)
    {
        X = x;
        Y = y;
    }
    static public XY operator +(XY a, XY b)
    {
        return new XY(a.X + b.X, a.Y + b.Y);
    }
    static public XY operator -(XY a, XY b)
    {
        return new XY(a.X - b.X, a.Y - b.Y);
    }
    static public bool operator ==(XY a,XY b)
    {
        return a.X == b.X && a.Y == b.Y;
    }
    static public bool operator !=(XY a,XY b)
    {
        return a.X != b.X || b.Y != a.Y;
    }
    
}