#include <bits/stdc++.h>
#define rep(i, a) for (int i = 0; i < (a); i++)
#define rep2(i, a, b) for (int i = (a); i < (b); i++)
#define repr(i, a) for (int i = (a) - 1; i >= 0; i--)
#define repr2(i, a, b) for (int i = (b) - 1; i >= (a); i--)
using namespace std;
typedef long long ll;
const ll inf = 1e9;
const ll mod = 1e9 + 7;

ll hypot2(ll x, ll y) {
	return x * x + y * y;
}

int main() {
	ll x1, y1, x2, y2, x3, y3;
	cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3;

	ll d1 = hypot2(x2 - x1, y2 - y1);
	ll d2 = hypot2(x3 - x1, y3 - y1);
	ll d3 = hypot2(x3 - x2, y3 - y2);

	ll x, y;
	if (d3 == d1 + d2 && d1 == d2) {
		x = x3 + x2 - x1;
		y = y3 + y2 - y1;
	} else if (d2 == d1 + d3 && d1 == d3) {
		x = x3 + x1 - x2;
		y = y3 + y1 - y2;
	} else if (d1 == d2 + d3 && d2 == d3) {
		x = x2 + x1 - x3;
		y = y2 + y1 - y3;
	} else {
		cout << -1 << endl;
		return 0;
	}

	cout << x << " " << y << endl;
}