This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define sz size()
#define pb push_back
#define ff first
#define ss second
int n, x_1, x_2, y_1, y_2;
vector <pair <int, int>> v;
int main () {
cin >> n;
for (int i = 1; i <= n; ++i) {
cin >> x_1 >> y_1 >> x_2 >> y_2;
assert (x_1 == x_2);
v.pb ({x_1, min (y_1, y_2)});
}
sort (v.begin(), v.end());
int git = (int)v.sz;
git--;
for (int i = 0; i < git; ++i) {
cout << v[i].ff << " " << v[i].ss << " " << v[i + 1].ff << " " << v[i + 1].ss << "\n";
}
}
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