#include <bits/stdc++.h>
using namespace std;
int32_t main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  vector<pair<int, int>> p(8);
  int sumx = 0;
  int sumy = 0;
  for (int i = 0; i < 3; i++) {
    cin >> p[i].first;
    sumx += p[i].first;
    cin >> p[i].second;
    sumy += p[i].second;
  }
  cout << "3"
       << "\n";
  cout << sumx - 2 * p[0].first << " " << sumy - 2 * p[0].second << "\n";
  cout << sumx - 2 * p[1].first << " " << sumy - 2 * p[1].second << "\n";
  cout << sumx - 2 * p[2].first << " " << sumy - 2 * p[2].second << "\n";
  return 0;
}
