#include<iostream>
using namespace std;
int a,b,c,d,e,f;
int cal(int x,int y){return x*x+y*y;}
main()
{
	cin>>a>>b>>c>>d>>e>>f;
	if(cal(a-c,b-d)==cal(a-e,b-f)&&cal(a-c,b-d)+cal(a-e,b-f)==cal(c-e,d-f))
	{
		cout<<e+(c-a)<<" "<<f+(d-b)<<endl;
	}
	else if(cal(a-c,b-d)==cal(c-e,d-f)&&cal(a-c,b-d)+cal(c-e,d-f)==cal(a-e,b-f))
	{
		cout<<e+(a-c)<<" "<<f+(b-d)<<endl;
	}
	else if(cal(a-e,b-f)==cal(c-e,d-f)&&cal(a-e,b-f)+cal(c-e,d-f)==cal(a-c,b-d))
	{
		cout<<a+(c-e)<<" "<<b+(d-f)<<endl;
	}
	else cout<<-1<<endl;
}