Cetvrta

#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

int main(){

    vector<int> x, y;

    for(int i=0; i<3; i++){
        int a, b;
        cin >> a >> b;
        x.push_back(a);
        y.push_back(b);
    }

    sort(x.begin(), x.end());
    sort(y.begin(), y.end());

    if(x[0]!=x[1]) cout << x[0] << ' ';
    else cout << x[2] << ' ';

    if(y[0]!=y[1]) cout << y[0];
    else cout << y[2];

    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED