#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <queue>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>

using namespace std;

inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}

typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef long long LL;
typedef unsigned long long ULL;

#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)

#define MP make_pair
#define SZ(a) int((a).size())
#define EACH(i,c) for(auto i: c)
#define SORT(c) sort((c).begin(),(c).end())

#define ALL(a)  (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()

const double EPS = 1e-10;
const double PI  = acos(-1.0);

#define dump(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;

#define x first
#define y second

int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);

	PII a, b, c;
	cin >> a.x >> a.y >> b.x >> b.y >> c.x >> c.y;
	const PII ini = MP(100000, 100000);

	function<PII(PII, PII, PII)> f = [&](PII p0, PII p1, PII p2){
		PII v1, v2, ret = ini;
		v1.x = p1.x - p0.x;
		v1.y = p1.y - p0.y;
		v2.x = p2.x - p0.x;
		v2.y = p2.y - p0.y;
		if(v1.x * v2.x + v1.y * v2.y == 0 && v1.x * v1.x + v1.y * v1.y == v2.x * v2.x + v2.y * v2.y){
			dump(p1.x);dump(p1.y);dump(p2.x);dump(p2.y);
			ret.x = v1.x + v2.x + p0.x;
			ret.y = v1.y + v2.y + p0.y;
			dump(ret.x);
			dump(ret.y);
		}
		return ret;
	};
	PII ret = ini;
	if(f(a, b, c) != ini) ret = f(a, b, c);
	if(f(b, c, a) != ini) ret = f(b, c, a);
	if(f(c, a, b) != ini) ret = f(c, a, b);

	if(ret == ini) cout << -1 << endl;
	else cout << ret.x << " " << ret.y << endl;


	return 0;
}