/**
 *
 * 解説を見た.
 *
 * */

#include <algorithm>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <deque>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <utility>
#include <vector>

#define CK(N, A, B) (A <= N && N < B)
#define REP(i, a, b) for (int i = a; i < b; i++)
#define RREP(i, a, b) for (int i = (b - 1); a <= i; i--)
#define F first
#define S second
#define ll long long

const int INF = 1e9;
const long long LLINF = 1e18;

using namespace std;

int dy[] = {0,1,0,-1};
int dx[] = {1,0,-1,0};
int dy8[] = {0,1,1,1,0,-1,-1,-1};
int dx8[] = {1,1,0,-1,-1,-1,0,1};

/*==================================================*/
/*variable*/
pair<int, int> coord[3];

/*==================================================*/
/*function*/

/*==================================================*/

int main() {
    REP(i,0,3){
        int x, y;
        cin>>x>>y;
        coord[i] = make_pair(x,y);
    }

    sort(coord, coord+3);
    do{
        int x3, y3;
        x3 = coord[1].F + (coord[1].S - coord[0].S);
        y3 = coord[1].S - (coord[1].F - coord[0].F);
        if(x3 == coord[2].F && y3 == coord[2].S){
            int x4, y4;
            x4 = coord[2].F + (coord[2].S - coord[1].S);
            y4 = coord[2].S - (coord[2].F - coord[1].F);
            cout<<x4<<" "<<y4<<endl;
            return 0;
        }

    }while(next_permutation(coord, coord+3));

    cout<<-1<<endl;

    return 0;
}