#include //ios::sync_with_stdio(false); //cin.tie(0); using namespace std; typedef long long ll; typedef unsigned long long ull; typedef pair pii; typedef pair ppii; typedef pair pipi; typedef pair pll; typedef pair ppll; typedef pair plpl; typedef tuple tl; ll mod=1000000007; ll mod2=998244353; ll inf=1000000000000000000; double pi=2*acos(0); #define rep(i,m,n) for(ll i=m;i=m;i--) int dh[4]={1,-1,0,0}; int dw[4]={0,0,1,-1}; int ddh[8]={-1,-1,-1,0,0,1,1,1}; int ddw[8]={-1,0,1,-1,1,-1,0,1}; ll lmax(ll a,ll b){ if(a0){ if(k&1)ret*=now; now*=now; k/=2; } return ret; } ll gya[200010]; ll kai[200010]; ll m; ll beki(ll n,ll k){ ll ret=1; ll now=n; while(k>0){ if(k%2==1){ ret*=now; ret%=m; } now*=now; now%=m; k/=2; } return ret; } ll gyaku(ll n){ return beki(n,mod-2); } void nckinit(ll n){ kai[0]=1; kai[1]=1; for(int i=2;i<=n;i++){ kai[i]=kai[i-1]*i; kai[i]%=mod; } gya[n]=gyaku(kai[n]); for(int i=n-1;i>=1;i--){ gya[i]=gya[i+1]*(i+1); gya[i]%=mod; } gya[0]=1; } ll nck(ll n,ll k){ if(k<0)return 0; if(k==0||n==k)return 1; ll ret=kai[n]; ret*=gya[n-k]; ret%=mod; ret*=gya[k]; ret%=mod; return ret; } ll npk(ll n,ll k){ if(k<0)return 0; if(k==0)return 1; ll ret=kai[n]; ret*=gya[n-k]; ret%=mod; return ret; } int main(){ int n;cin>>n; int a[n],b[n],c[n],d[n]; int sx=2,sy=8,tx=3,ty=9,ux=7,uy=9; rep(i,0,n){ cin>>a[i]>>b[i]>>c[i]>>d[i]; if(a[i]==sx&&b[i]==sy){ sx=c[i];sy=d[i]; } if(a[i]==tx&&b[i]==ty){ tx=c[i];ty=d[i]; } if(a[i]==ux&&b[i]==uy){ ux=c[i];uy=d[i]; } } if(sx==5&&sy==8&&tx==4&&ty==8&& ux==6&&uy==8)cout<<"YES"<