#include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;
using vi = vector<i64>;
using vvi = vector<vi>;

struct Point {
    int x, y;
    Point operator+(const Point rhs) {
        return {x + rhs.x, y + rhs.y};
    }
    Point operator/(const int k) {
        return {x / k, y / k};
    } 
    int dist(const Point rhs) {
        return abs(x - rhs.x) + abs(y - rhs.y);
    }
    bool operator==(const Point rhs) {
        return x == rhs.x && y == rhs.y;
    }
};

bool isSquare(vector<Point> points) {
    for (int i = 0; i < 4; i++) {
        for (int j = i + 1; j < 4; j++) {
            if (points[i] == points[j]) {
                return false;
            }
        }
    }
    for (int i = 0; i < 4; i++) {
        for (int j = i + 1; j < 4; j++) {
            Point G = (points[i] + points[j]) / 2;
            int ok = 1;
            int D = points[0].dist(G);
            for (int k = 1; k < 4; k++) {
                if (D != points[k].dist(G)) {
                    ok = 0;
                }
            }
            if (ok) {
                return true;
            }
        }
    }
    return false;
}

int main() {
    vector<Point> hoge;
    for (int i = 0; i < 3; i++) {
        int x, y;
        cin >> x >> y;
        hoge.push_back({2 * x, 2 * y});
    }
    for (int i = -100; i <= 100; i++) {
        for (int j = -100; j <= 100; j++) {
            vector<Point> fuga(hoge);
            fuga.push_back({2 * i, 2 * j});
            if (isSquare(fuga)) {
                cout << i << " " << j << endl;
                return 0;
            }
        }
    }
    cout << -1 << endl;
}