#include <iostream>
int a[10][10];

int main() {
  int N;
  std::cin >> N;
  for (int i = 1; i <= N; ++i) {
    for (int j = 1; j <= N; ++j) {
      a[i][j] = 0;
    }
  }
  a[2][8] = 1;
  a[3][9] = 2;
  a[7][9] = 3;
  for (int i = 0; i < N; ++i) {
    int x0, y0, x1, y1;
    std::cin >> x0 >> y0 >> x1 >> y1;
    a[x0][y0] ^= a[x1][y1];
    a[x1][y1] ^= a[x0][y0];
    a[x0][y0] ^= a[x1][y1];
  }
  if (a[5][8] = 1 && a[4][8] == 2 && a[6][8] == 3) {
    std::cout << "YES" << std::endl;
  } else {
    std::cout << "NO" << std::endl;
  }
}