#include<iostream>
#include<string>

using namespace std;

string valid(int data[][2]) {
    int valid_data[][2] = {
        {5, 8},
        {4, 8},
        {6, 8}
    };
    for(int i = 0; i < 3; i++) {
        if(data[i][0] != valid_data[i][0] || data[i][1] != valid_data[i][1]) {
            return "NO";
        } 
    }
    return "YES";
}

int main() {
    int data[][2] = {
        {2, 8},
        {3, 9},
        {7, 9}
    };
    
    int n;
    cin >> n;
    for(int i = 0; i < n; i++) {
        int x1, y1, x2, y2;
        cin >> x1 >> y1 >> x2 >> y2;
        for(int j = 0; j < 3; j++) {
            if(data[j][0] == x1 && data[j][1] == y1) {
                data[j][0] = x2;
                data[j][1] = y2;
            }
        }
    } 
    cout << valid(data) << endl;

    return 0;
}