#include<bits/stdc++.h>
using namespace std;
const int N=3005;
int n,T;
inline int read(){
	int x=0;
	char c=getchar();
	while(c<'0'||c>'9') c=getchar();
	while(c>='0'&&c<='9')
		x=(x<<3)+(x<<1)+(c^48), c=getchar();
	return x;
}
struct Dot{
	int x,y;
	Dot(int _x=0,int _y=0){ x=_x, y=_y; }
}dot[N];
inline bool cmp(Dot a,Dot b){
	if(a.x!=b.x) return a.x<b.x;
	return a.y<b.y;
}
inline void Delete(int i){
	int x=dot[i].x,y0=dot[i].y,y1=dot[i+1].y;
	//cout<<x<<' '<<y0<<' '<<dot[i+1].x<<' '<<y1<<'\n';
	printf("%.1lf %d %.1lf %d\n",x+0.5,y0,x-y1+y0+0.5,y1);
}
inline void Solve0(int l,int r,Dot &t){
	for(register int i=l;i+1<=r;i+=2) Delete(i);
	if((r-l+1)&1) t=dot[r];
}
inline void Solve(){
	cout<<"Yes\n";
	Dot t=Dot(-1,-1);
	for(register int l=1,r=1;l<=n;l=r=r+1){
		while(r<n&&dot[l].x==dot[r+1].x) ++r;
		if(t.x==-1) Solve0(l,r,t);
		else{
			int p=l;
			while(p<r&&dot[p+1].y<t.y) Delete(p), p+=2;
			if(p<=r&&dot[p].y<=t.y){
				int x0=t.x,x1=dot[p].x,y0=dot[p].y,y1=t.y;
				if(p==r||dot[p+1].y>t.y){
					int mx=max(x1-x0,y1-y0); ++p, t=Dot(-1,-1);
					printf("%d %d %d %d\n",x1-mx,y1-mx,x1,y1);
				}
				else{
					if(x1-x0>y1-y0)
						printf("%d %d %d %d\n",x1,y0,x1-y1+y0,y1), p+=2;
					else{
						t=Dot(-1,-1), dot[p+1]=dot[p], ++p;
						printf("%d %.1lf %d %.1lf\n",x0,y1+0.5,x1,y1-x1+x0+0.5);
					}
				}
			}
			if(t.x!=-1&&p<=r){
				int x=dot[p].x,y=dot[p].y,mx=max(x-t.x,y-t.y); ++p, t=Dot(-1,-1);
				printf("%d %d %d %d\n",x-mx,y-mx,x,y);
			}
			if(p<=r) Solve0(p,r,t);
		}
	}
}
int main(){
	T=1;
	while(T--){
		n=read();
		for(register int i=1;i<=n;++i)
			dot[i].x=read(), dot[i].y=read();
		sort(dot+1,dot+1+n,cmp), Solve();
	}
	return 0;

answer.code: In function ‘void Solve0(int, int, Dot&)’:
answer.code:27:26: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   27 |         for(register int i=l;i+1<=r;i+=2) Delete(i);
      |                          ^
answer.code: In function ‘void Solve()’:
answer.code:33:26: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   33 |         for(register int l=1,r=1;l<=n;l=r=r+1){
      |                          ^
answer.code:33:30: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   33 |         for(register int l=1,r=1;l<=n;l=r=r+1){
      |                              ^
answer.code: In function ‘int main()’:
answer.code:66:34: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   66 |                 for(register int i=1;i<=n;++i)
      |                                  ^
answer.code:70:18: error: expected ‘}’ at end of input
   70 |         return 0;
      |                  ^
answer.code:62:11: note: to match this ‘{’
   62 | int main(){
      |           ^