#define _USE_MATH_DEFINES
#include<iostream>
#include<vector>
#include<algorithm>
#include<cmath>
#include<string>
#include<iomanip>
#include<numeric>
#include<queue>
#include<deque>
#include<stack>
#include<set>
#include<map>
#include<random>
#include<bitset>
#include<cassert>
#include<complex>
#include<fstream>
#include<cstdlib>
#include<functional>
#include<array>
using namespace std;
typedef long long ll;
const int mod=998244353;
const int dx[]={1,0,0,-1},dy[]={0,1,-1,0};
int main(){
	int x1,y1,x2,y2,x3,y3;
	cin>>x1>>y1>>x2>>y2>>x3>>y3;
	int d12,d13,d23;
	d12=(x1-x2)*(x1-x2)+(y1-y2)*(y1-y2);
	d13=(x1-x3)*(x1-x3)+(y1-y3)*(y1-y3);
	d23=(x2-x3)*(x2-x3)+(y2-y3)*(y2-y3);
	int d[]={d12,d13,d23};
	sort(d,d+3);
	if(d[0]==d[1]&&d[1]*2==d[2]){
		if(d12==d23){
			swap(x1,x2);
			swap(y1,y2);
		}else if(d13==d23){
			swap(x1,x3);
			swap(y1,y3);
		}
		cout<<x2+x3-x1<<' '<<y2+y3-y1<<endl;
	}else
		cout<<-1<<endl;
}