#include <iostream>
#include <map>
using namespace std;

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

    map<int, int> x_counter, y_counter;
    x_counter[x1]++; y_counter[y1]++;
    x_counter[x2]++; y_counter[y2]++;
    x_counter[x3]++; y_counter[y3]++;

    if (x_counter.size() == 2 && y_counter.size() == 2) {
        int x, y;
        for (auto& it : x_counter) {
            if (it.second == 1) x = it.first;
        }
        for (auto& it : y_counter) {
            if (it.second == 1) y = it.first;
        }
        cout << x << " " << y << endl;
    } else {
        cout << -1 << endl;
    }
    return 0;
}