#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)
#define FOR(i,b,e) for (int i=(int)(b); i<(int)(e); i++)
#define ALL(x) (x).begin(), (x).end()

const double PI = acos(-1);
double EPS = 1e-9;

bool check(vector<pair<int, int> > ps) {

  vector<int> dist;
  REP (i, 4) REP (j, i) {
    int x = ps[i].first - ps[j].first;
    int y = ps[i].second - ps[j].second;
    dist.push_back(x * x + y * y);
  }

  sort(dist.begin(), dist.end());

  return dist[1] == dist[0] && dist[2] == dist[0] && dist[3] == dist[0] && dist[4] == 2 * dist[0] && dist[5] == 2 * dist[0];
}


int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  vector<pair<int, int> > ps;
  REP (i, 3) {
    int x, y;
    cin >> x >> y;
    ps.emplace_back(x, y);
  }

  for (int x = -500; x <= 500; x++) {
    for (int y = -500; y <= 500; y++) {
      ps.emplace_back(x, y);
      if (check(ps)) {
        cout << x << " " << y << endl;
        return 0;
      }
      ps.pop_back();
    }
  }

  cout << -1 << endl;
  
  return 0;
}