#include <iostream>
#include <utility>
#include <vector>
using namespace std;

int main() {
  int N;
  cin >> N;
  vector<int> x1(N), y1(N), x2(N), y2(N);
  for (int i = 0; i < N; ++i)
    cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
  pair<int, int> A = make_pair(2, 8), B = make_pair(3, 9), C = make_pair(7, 9);
  for (int i = 0; i < N; ++i) {
    if (A == make_pair(x1[i], y1[i]))
      A = make_pair(x2[i], y2[i]);
    if (B == make_pair(x1[i], y1[i]))
      B = make_pair(x2[i], y2[i]);
    if (C == make_pair(x1[i], y1[i]))
      C = make_pair(x2[i], y2[i]);
  }
  if (A == make_pair(5, 8) && B == make_pair(4, 8) && C == make_pair(6, 8))
    cout << "YES" << endl;
  else
    cout << "NO" << endl;
}