#include <bits/stdc++.h>
using namespace std;

int dis(int x1, int x2, int y1, int y2) {
    return (x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2);
}

int main() {
    int x1, y1, x2, y2, x3, y3;
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3;
    int d1 = dis(x1, x2, y1, y2);
    int d2 = dis(x1, x3, y1, y3);
    int d4 = dis(x2, x3, y2, y3);
    for (int x4 = -100; x4 <= 100; x4++) {
        for (int y4 = -100; y4 <= 100; y4++) {
            int d3 = dis(x1, x4, y1, y4);
            int d5 = dis(x3, x4, y3, y4);
            int d6 = dis(x2, x4, y2, y4);

            vector<int> d = {d1, d2, d3, d4, d5, d6};
            sort(d.begin(), d.end());
            if (d[0] == d[1] && d[1] == d[2] && d[2] == d[3] &&
                d[0] * 2 == d[5] && d[4] == d[5]) {
                cout << x4 << ' ' << y4 << '\n';
                return 0;
            }
        }
    }
    cout << -1 << endl;
}