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

public class Program
{
    public void Proc(){
        Reader.IsDebug = false;
        int[] inpt = Reader.GetInt();
        
        int x1 = inpt[0];
        int y1 = inpt[1];
        int x2 = inpt[2];
        int y2 = inpt[3];
        int x3 = inpt[4];
        int y3 = inpt[5];
        
        int len1 = (int)(Math.Pow((x1 - x2),2) + Math.Pow((y1-y2), 2));
        int len2 = (int)(Math.Pow((x1 - x3), 2) + Math.Pow(y1-y3, 2));
        
        int aX1 = x1;
        int aY1 = y1;
        
        int aX2;
        int aY2;
        
        int aX3;
        int aY3;
        
        if(len1 < len2) {
            aX2 = x2;
            aY2 = y2;
            aX3 = x3;
            aY3 = y3;
        } else
        {
            aX2 = x3;
            aY2 = y3;
            aX3 = x2;
            aY3 = y2;
        }
        
        int tX1 = aX1 + (aY1 - aY2);
        int tY1 = aY1 - (aX1 - aX2);
        int len3 = (int)(Math.Pow(aX3 - tX1, 2) + Math.Pow(aY3 - tY1, 2));
        if(len3 == 0) {
            int tX2 = aX3 - (aX1 - aX2);
            int tY2 = aY3 - (aY1 - aY2);
            Console.WriteLine(tX2 + " " + tY2);
        } else if(len3 == Math.Min(len1, len2))
        {
            Console.WriteLine(tX1 + " " + tY1);
        } else
        {
            tX1 = aX1 - (aY1 - aY2);
            tY1 = aY1 + (aX1 - aX2);
            len3 = (int)(Math.Pow(aX3 - tX1, 2) + Math.Pow(aY3 - tY1, 2));
            if(len3 == 0) {
                int tX2 = aX3 - (aX1 - aX2);
                int tY2 = aY3 - (aY1 - aY2);
                Console.WriteLine(tX2 + " " + tY2);
            } else if(len3 == Math.Min(len1, len2))
            {
                Console.WriteLine(tX1 + " " + tY1);
            } else
            {
                Console.WriteLine(-1);
            }
        }
        
        
        

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

class Reader
{
    public static bool IsDebug = true;
    
    private static System.IO.StringReader sr;
    
    public static string ReadLine() {
        if(IsDebug) {
            if(sr == null) {
                sr = new System.IO.StringReader(initStr.Trim());
            }
            return sr.ReadLine();
        } else {
            return Console.ReadLine();
        }
    }
    
    public static int[] GetInt(char delimiter = ' ') {
        string[] inpt = ReadLine().Split(delimiter);
        int[] ret = new int[inpt.Length];
        for(int i=0; i<inpt.Length; i++) {
            ret[i] = int.Parse(inpt[i]);
        }
        return ret;
    }
    
    private static string initStr = @"


0 0 2 0 2 1


";
}