#include <iostream>
using namespace std;
int main(int argc, char* argv[])
{
	int X1,Y1,X2,Y2,X3,Y3;
	cin>>X1>>Y1>>X2>>Y2>>X3>>Y3;
	int D12=(X1-X2)*(X1-X2)+(Y1-Y2)*(Y1-Y2);
	int D22=(X1-X3)*(X1-X3)+(Y1-Y3)*(Y1-Y3);
	int D23=(X2-X3)*(X2-X3)+(Y2-Y3)*(Y2-Y3);
	int dMin=min(D12,min(D22,D23));
	int dMax=max(D12,max(D22,D23));
	int x1,y1,x2,y2,x3,y3;
	if (D12==D22){
		x1=X2;
		y1=Y2;
		x2=X3;
		y2=Y3;
		x3=X1;
		y3=Y1;
	}else if (D12==D23){
		x1=X1;
		y1=Y1;
		x2=X3;
		y2=Y3;
		x3=X2;
		y3=Y2;
	}else if (D22==D23){
		x1=X1;
		y1=Y1;
		x2=X2;
		y2=Y2;
		x3=X3;
		y3=Y3;
	}else{
		cout<<-1<<endl;
		return 0;
	}
	int x,y;
	for (x=-200;x<=200;x++){
		for (y=-200;y<=200;y++){
			if ((x-x1)*(x-x1)+(y-y1)*(y-y1)==dMin && (x-x2)*(x-x2)+(y-y2)*(y-y2)==dMin && (x-x3)*(x-x3)+(y-y3)*(y-y3)==dMax ){
				cout<<x<<" "<<y<<endl;
				return 0;
			}
		}
	}
	cout<<-1<<endl;
	return 0;
}