#include <bits/stdc++.h>
using namespace std;
#define REP(i,a) for(int i = 0; i < (a); i++)
#define ALL(a) (a).begin(),(a).end()
typedef long long ll;
typedef pair<int, int> P;
const int INF = 1e9;
const int MOD = 1e9 + 7;

signed main(){
    int n;
    cin >> n;
    P a[3];
    a[0] = P(2, 8), a[1] = P(3, 9), a[2] = P(7, 9);
    int x1,y1,x2,y2;
    REP(i,n){
        cin >> x1 >> y1 >> x2 >> y2;
        REP(j,3){
            if(x1 == a[j].first && y1 == a[j].second){
                a[j].first = x2;
                a[j].second = y2;
            }
        }
    }
    if(a[0] == P(5, 8) && a[1] == P(4, 8) && a[2] == P(6, 8)){
        cout << "YES" << endl;
    }else{
        cout << "NO" << endl;
    }
}