package no055;

import java.util.Arrays;
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		Vector2[] v = new Vector2[4];
		for(int i=0;i<3;i++) {
			v[i] = new Vector2(sc.nextInt(),sc.nextInt());
		}
		for(int x=-200;x<=200;x++) {
			for(int y=-200;y<=200;y++) {
				v[3] = new Vector2(x,y);
				if (isSquare(v)) {
					System.out.println(v[3]);
					return;
				}
			}
		}
		System.out.println(-1);
	}

	public static boolean isSquare(Vector2[] v) {
		long[] l = new long[6];
		int ind = 0;
		for(int i=0;i<4;i++) {
			for(int j=i+1;j<4;j++) {
				l[ind++] = v[i].distSquare(v[j]);
			}
		}
		Arrays.sort(l);
		long a = l[0];
		return l[1] == a && l[2] == a && l[3] == a && l[4] == a * 2 && l[5] == a * 2;
	}

}
class Vector2 {
	int x = 0;
	int y = 0;
	public Vector2(int x,int y) {
		this.x = x;
		this.y = y;
	}
	public int dot(Vector2 v) {
		return this.x*v.x+this.y*v.y;
	}
	public int cross(Vector2 v) {
		return this.x*v.y-this.y*v.x;
	}
	public Vector2 add(Vector2 v) {
		return new Vector2(this.x+v.x,this.y+v.y);
	}
	public Vector2 subtract(Vector2 v) {
		return new Vector2(this.x-v.x,this.y-v.y);
	}
	public Vector2 multiply(int k) {
		return new Vector2(k*this.x,k*this.y);
	}
	public long normSquare() {
		return x * x + y * y;
	}
	public long distSquare(Vector2 v) {
		return this.subtract(v).normSquare();
	}
	public String toString() {
		return this.x + " " + this.y;
	}
}