using System;
using System.Collections;
using System.Collections.Generic;
 
class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		var d=ria();
		Point[] P=new Point[3];
		P[0]=new Point(d[0],d[1]);
		P[1]=new Point(d[2],d[3]);
		P[2]=new Point(d[4],d[5]);
		
		
		if(Point.IP(P[1]-P[0],P[2]-P[0])==0){
			if(Point.IP(P[1]-P[0],P[1]-P[0])==Point.IP(P[2]-P[0],P[2]-P[0])){
				Point Q=(P[1]-P[0])+(P[2]-P[0])+P[0];
				Console.WriteLine("{0} {1}",Q.X,Q.Y);
				return;
			}
		}
		if(Point.IP(P[0]-P[1],P[2]-P[1])==0){
			if(Point.IP(P[0]-P[1],P[0]-P[1])==Point.IP(P[2]-P[1],P[2]-P[1])){
				Point Q=(P[0]-P[1])+(P[2]-P[1])+P[1];
				Console.WriteLine("{0} {1}",Q.X,Q.Y);
				return;
			}
		}
		if(Point.IP(P[0]-P[2],P[1]-P[2])==0){
			if(Point.IP(P[0]-P[2],P[0]-P[2])==Point.IP(P[1]-P[2],P[1]-P[2])){
				Point Q=(P[0]-P[2])+(P[1]-P[2])+P[2];
				Console.WriteLine("{0} {1}",Q.X,Q.Y);
				return;
			}
		}
		
		Console.WriteLine(-1);
		
		
		
		
	}

	public Sol(){
	}

	class Point{
		public int X;
		public int Y;
		public Point(int x_,int y_){
			X=x_;Y=y_;
		}
		
		public static int IP(Point x,Point y){
			return x.X*y.X+x.Y*y.Y;
		}
		
		public static Point operator+(Point x,Point y){
			return new Point(x.X+y.X,x.Y+y.Y);
		}
		public static Point operator-(Point x,Point y){
			return new Point(x.X-y.X,x.Y-y.Y);
		}
	}

	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(){return Console.ReadLine().Split(' ');}
	static int[] ria(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>int.Parse(e));}
	static long[] rla(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>long.Parse(e));}
	static double[] rda(){return Array.ConvertAll(Console.ReadLine().Split(' '),e=>double.Parse(e));}
}