#include<iostream>
using namespace std;
int main(){
	int n,x1,y1,x2,y2;
	cin>>n;
	int ax=2,ay=8,bx=3,by=9,cx=7,cy=9;
	while(cin>>x1>>y1>>x2>>y2){
		if(ax==x1&&ay==y1){
			ax=x2;
			ay=y2;
		}
		if(bx==x1&&by==y1){
			bx=x2;
			by=y2;
		}
		if(cx==x1&&cy==y1){
			cx=x2;
			cy=y2;
		}
	}
	cout<<(ax==5&&ay==8&&bx==4&&by==8&&cx==6&&cy==8?"YES":"NO")<<endl;
}