import java.math.BigInteger;
import java.util.*;
 

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] x = new int[3];
        int[] y = new int[3];
        for(int i=0;i<3;i++){
        	x[i]=sc.nextInt();
        	y[i]=sc.nextInt();
        }
        for(int i=0;i<3;i++){
        	if( Math.pow(x[i]-x[(i+1)%3],2)+Math.pow(y[i]-y[(i+1)%3],2) ==Math.pow(x[i]-x[(i+2)%3],2)+Math.pow(y[i]-y[(i+2)%3],2) &&  Math.pow(x[i]-x[(i+1)%3],2)*2+Math.pow(y[i]-y[(i+1)%3],2)*2==Math.pow(x[(i+1)%3]-x[(i+2)%3],2)+Math.pow(y[(i+1)%3]-y[(i+2)%3],2)){
        		System.out.println( (x[(i+1)%3]-x[i]+x[(i+2)%3])+" "+(y[(i+1)%3]-y[i]+y[(i+2)%3]) );
        		return;
        	}
        }
        System.out.println(-1);
    }
}