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

typedef pair<int,int> P;

bool check(P p[4]){
    set<vector<int> > s;
    for(int i = 0; i < 4; i++){
        vector<int> v;
        for(int j = 0; j < 4; j++){
            if(i == j) continue;
            int mx = p[i].first - p[j].first, my = p[i].second - p[j].second;
            int d = mx*mx+my*my;
            if(d == 0) return false;
            v.push_back(d);
        }
        sort(v.begin(), v.end());
        if(v[0] != v[1] && v[1] != v[2]) return false;
        s.insert(v);
    }
    return (s.size() == 1);
}

int main(){
    P p[4];
    for(int i = 0; i < 3; i++){
        int x,y;
        cin >> x >> y;
        p[i] = P(x,y);
    }
    for(int y = -200; y <= 200; y++){
        for(int x = -200; x <= 200; x++){
            p[3] = P(x,y);
            if(check(p)){
                cout << x << " " << y << endl;
                return 0;
            }
        }
    }
    cout << -1 << endl;
    return 0;
}