import java.util.Scanner;


public class Main_yukicoder55 {

    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++) {
        	int xx1 = x[(i + 1) % 3] - x[i];
        	int yy1 = y[(i + 1) % 3] - y[i];
        	int xx2 = x[(i + 2) % 3] - x[i];
        	int yy2 = y[(i + 2) % 3] - y[i];

            if (Geom.dot(xx1, yy1, xx2, yy2) == 0 && Geom.sumofsquare(xx1, yy1) == Geom.sumofsquare(xx2, yy2)) {
            	System.out.printf("%d %d\n", xx1 + xx2 + x[i], yy1 + yy2 + y[i]);
            	
            	sc.close();
            	return;
            }
        }

		System.out.println("-1");
        
        sc.close();
    }

	private static class Geom {
		static int dot(int xa, int ya, int xb, int yb) {
			return xa * xb + ya * yb;
		}
		static int sumofsquare(int xa, int ya) {
			return xa * xa + ya * ya;
		}
	}
}