#include <bits/stdc++.h>
#define rep(i,n) for (int i=0; i<(n); ++i)
using namespace std;
using ll=long long;
int main(){
    int n;
    cin>>n;
    vector<int>x1(n),x2(n),y1(n),y2(n);
    pair<int,int>a=make_pair(2,8),
                 b=make_pair(3,9),
                 c=make_pair(6,8);
    rep(i,n){
        cin>>x1[i]>>y1[i]>>x2[i]>>y2[i];
        if(a.first==x1[i]&&a.second==y1[i])
        a=make_pair(x2[i],y2[i]);
        if(b.first==x1[i]&&b.second==y1[i])
        b=make_pair(x2[i],y2[i]);
        if(c.first==x1[i]&&c.second==y1[i])
        c=make_pair(x2[i],y2[i]);
    }
    if(a.first==5&&a.second==8&&
       b.first==4&&b.second==8&&
       c.first==6&&c.second==8)
       cout<<"YES"<<endl;
    else cout<<"NO"<<endl;
}