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

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

    vector<pair<int,int>> XY(3);
    for(auto &[x,y] : XY) cin >> x >> y;

    for(int i=0; i<3; i++){
        auto [x,y] = XY.at(i);
        int x0 = -1000,y0,x1,y1;
        for(int k=0; k<3; k++){
            if(i == k) continue;
            if(x0 == -1000) tie(x0,y0) = XY.at(k);
            else tie(x1,y1) = XY.at(k);
        }
        x0 -= x,y0 -= y,x1 -= x,y1 -= y;
        if(x0*x1 == -y0*y1 && x0*x0+y0*y0 == x1*x1+y1*y1){
            x0 += x1,y0 += y1;
            cout << x0+x << " " << y0+y << "\n";
            return 0;
        }
    }
    cout << "-1\n";
}