#include<bits/stdc++.h>
using namespace std;

//#define int long long

#define rep(i,n) for(int i=0;i<(n);i++)
#define pb push_back
#define all(v) (v).begin(),(v).end()
typedef vector<int>vint;
typedef pair<int,int>pint;
typedef vector<pint>vpint;

signed main(){
    vpint vec(3);
    rep(i,3)cin>>vec[i].first>>vec[i].second;
    sort(all(vec));


    do{
        if(vec[0].first!=vec[1].first)continue;
        if(vec[0].second!=vec[2].second)continue;
        if(abs(vec[0].second-vec[1].second)!=abs(vec[0].first-vec[2].first))continue;
        cout<<vec[2].first<<" "<<vec[1].second<<endl;
        return 0;
    }while(next_permutation(all(vec)));
    cout<<"-1"<<endl;
    return 0;
}