#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;
        int dx1 = x[i2]-x[i],dy1 = y[i2]-y[i];
        int dx2 = x[i3]-x[i],dy2 = y[i3]-y[i];
        if(dx1*dx1 + dy1*dy1 == dx2*dx2 + dy2*dy2 &&
        dx1*dx2 + dy1*dy2 == 0){
            cout << x[i3]+x[i2]-x[i] << " " << y[i3]+y[i2]-y[i] << endl; 
            return 0;
        }
    }
    cout << -1 << endl;
}