#include <iostream>
#include <cmath>
using namespace std;
int main() {
	cin.tie(0); ios::sync_with_stdio(false);
	int XY[3][2];
	double sides[3];
	cin >> XY[0][0] >> XY[0][1] >> XY[1][0] >> XY[1][1] >> XY[2][0] >> XY[2][1];
	sides[0] = hypot(XY[0][0] - XY[1][0], XY[0][1] - XY[1][1]);
	sides[1] = hypot(XY[1][0] - XY[2][0], XY[1][1] - XY[2][1]);
	sides[2] = hypot(XY[2][0] - XY[0][0], XY[2][1] - XY[0][1]);
	for (int i = 0; i < 3;i++) {
		if (sides[i % 3] == sides[(i + 1) % 3]) {
			int c1 = 10000 * sides[i % 3] * sqrt(2), c2 = 10000 * sides[(i + 2) % 3];
			if (c1 == c2) {
				cout << XY[(i + 2) % 3][0] - XY[(i + 1) % 3][0] + XY[i % 3][0] << " " << XY[(i + 2) % 3][1] - XY[(i + 1) % 3][1] + XY[i % 3][1] << endl;
				return 0;
			}
		}
	}
	cout << -1 << endl;
	return 0;
}