#include <iostream>
#include <algorithm>
using namespace std;

int main(){
	int x[3], y[3], a[] = {0, 1, 2};
	for(int i = 0; i < 3; i++) cin >> x[i] >> y[i];
	do{
		int dx = x[a[1]] - x[a[0]], dy = y[a[1]] - y[a[0]];
		if(x[a[1]] - dy == x[a[2]] && y[a[1]] + dx == y[a[2]]){
			cout << x[a[2]] - dx << ' ' << y[a[2]] - dy << endl;
			return 0;
		}
	}while(next_permutation(a, a + 3));
	cout << -1 << endl;
}