#include<iostream>
#include<algorithm>
#include<cstdio>
class bod{
	public:
	double x,y;
	bod(){}
	bod(double x,double y):x(x),y(y){}
};
bod* p;
double e=1e-5;
bool operator<(bod a,bod b){
	if(a.x<b.x)
		return 1;
	if(a.x>b.x)
		return 0;
	return a.y<b.y;

}

int main(){

	while(1){
	int n;
	cin>>n;
	if(n==0)
		break;
	p=new bod[n];
	//double x,y;		
	for(int i=0;i<n;i++){
		cin>>p[i].x>>p[i].y;
	}
	double xx=0,yy=0;
	for(int i=0;i<n;i++){
		xx+=p[i].x;
		yy+=p[i].y;
	}
	xx/=double(n);
	yy/=double(n);
	sort(p,p+n);
	
	
	
	for(int i=0;i<n;i++){
		double x=2*xx-p[i].x;
		double y=2*yy-p[i].y;
		//if(fabs(x-int (x+e))>e || fabs(y-int (y+e))>e || lower_bound(p,p+n,bod(int (x+e),int (y+e)))==p+n){
		bod* b=lower_bound(p,p+n,bod(x,y));
//		bod* b=lower_bound(p,p+n,bod(int (x+e),int (y+e)));
		
		if(b==p+n || b==NULL || fabs(b->x- x)>e || fabs(b->y- y)>e ){
			//cout<<xx<<' '<<yy<<"   "<<p[i].x<<' '<<p[i].y<<"   "<<x<<' '<<y<<endl;
			cout<<"This is a dangerous situation!\n";
			goto next;
		
		}
			
			
	}
	printf("V.I.P. should stay at (%.1f,%.1f).\n",xx,yy);
	next:;
	delete[]p;
	
	}
}