#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <functional>
#include <set>

using namespace std;


int main()
{	
	vector<int> x(4),y(4);
	for(int i=0;i<3;i++) cin>>x[i]>>y[i];

	for(int X=-200;X<=200;X++){
		for(int Y=-200;Y<=200;Y++){
			x[3]=X; y[3]=Y;

			vector<long> len;
			for(int i=0;i<4;i++){
				for(int j=i+1;j<4;j++){
					long l=(x[i]-x[j])*(x[i]-x[j])+(y[i]-y[j])*(y[i]-y[j]);
					
					len.push_back(l);
				}
			}
			sort(len.begin(),len.end());

			if(len[0]==0 || len[5]==0) continue;

			int c1,c2;
			c1=count(len.begin(),len.end(),len[0]);
			c2=count(len.begin(),len.end(),len[5]);

			if(c1==4 && c2==2 && 2*len[0]==len[5]){
			 	cout<<X<<" "<<Y<<endl;
				return 0;
			}

		}
	}
	cout<<-1<<endl;

	return 0;
}