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

signed main(){
  vector< int > x( 3 ), y( 3 );
  for( int i = 0; i < 3; ++i )
    cin >> x[ i ] >> y[ i ];
  for( int i = 0; i < 3; ++i )
    for( int j = i + 1; j < 3; ++j ){
      int h = abs( x[ i ] - x[ j ] );
      int w = abs( y[ i ] - y[ j ] );
      if( h != w ) continue;
      if( not ( abs( x[ 3 - i - j ] - x[ i ] ) == h and abs( y[ 3 - i - j ] - y[ j ] ) == w ) and
          not ( abs( x[ 3 - i - j ] - x[ j ] ) == h and abs( y[ 3 - i - j ] - y[ i ] ) == w ) ) continue;
      int g2x = x[ i ] + x[ j ];
      int g2y = y[ i ] + y[ j ];
      cout << g2x - x[ 3 - i - j ] << " " << g2y - y[ 3 - i - j ] << endl, exit( 0 );
    }
  cout << -1 << endl;
  return 0;
}