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.hypot(x[i%3]-x[(i+1)%3],y[i%3]-y[(i+1)%3])==Math.hypot(x[(i+1)%3]-x[(i+2)%3],y[(i+1)%3]-y[(i+2)%3])){
			if(Math.hypot(x[i%3]-x[(i+1)%3],y[i%3]-y[(i+1)%3])*Math.pow(2,0.5)==Math.hypot(x[i%3]-x[(i+2)%3],y[i%3]-y[(i+2)%3])){
				int ansx=x[(i+2)%3]+x[i%3]-x[(i+1)%3];
				int ansy=y[(i+2)%3]+y[i%3]-y[(i+1)%3];
				System.out.println(ansx+" "+ansy);
				return;
			}
		}
		
		
	}
		System.out.println(-1);}
}