#include <algorithm>
#include <cmath>
#include <iostream>
#include <utility>
using namespace std;

int main() {
	double X1, Y1, X2, Y2, X3, Y3, i, j;
	cin >> X1 >> Y1 >> X2 >> Y2 >> X3 >> Y3;
	pair<double, double> tmp1 = minmax({ hypot(X1 - X2, Y1 - Y2), hypot(X1 - X3, Y1 - Y3), hypot(X2 - X3, Y2 - Y3) });
	for (i = -200.0; i <= 200.0; ++i) {
		for (j = -200.0; j <= 200.0; ++j) {
			int tmp2 = 0, tmp3 = 0;
			if (hypot(X1 - i, Y1 - j) == tmp1.first) ++tmp2;
			else if (hypot(X1 - i, Y1 - j) == tmp1.second) ++tmp3;
			if (hypot(X2 - i, Y2 - j) == tmp1.first) ++tmp2;
			else if (hypot(X2 - i, Y2 - j) == tmp1.second) ++tmp3;
			if (hypot(X3 - i, Y3 - j) == tmp1.first) ++tmp2;
			else if (hypot(X3 - i, Y3 - j) == tmp1.second) ++tmp3;
			if (tmp2 == 2 && tmp3 == 1) break;
		}
		if (j != 201.0) break;
	}
	if (i != 201.0) cout << i << ' ' << j;
	else cout << -1;
}