#include<bits/stdc++.h>
using namespace std;
main(){
    int x[4],y[4];
    cin >> x[0] >> y[0] >> x[1] >> y[1] >> x[2] >> y[2];
    for(int i = 0;i < 3;i++){
        int i2 = (i+1)%3,i3 = (i+2)%3;
        if(abs(x[i2]-x[i]) + abs(y[i2]-y[i]) == 
            abs(x[i3]-x[i]) + abs(y[i3]-y[i])){
            cout << x[i3]+x[i2]-x[i] << " " << y[i3]+y[i2]-y[i] << endl; 
            return 0;
        }
    }
    cout << -1 << endl;
}