#include <stdio.h>

int n;
int x[20000],y[20000];
unsigned char pouz[20000];
int minx,miny,maxx,maxy,xx,yy;
//int poc;

int test(int kt)
{
int i,ax,ay;

ax=-x[kt]+xx;
ay=-y[kt]+yy;
//pouz[kt]=1;
/*if(ax==(float) xx/2)
	if(ay==(float) yy/2)
		return(0);*/
for(i=kt;i<n;i++)
	if(pouz[i]==0)
		if(ax==x[i])
			if(ay==y[i])
			{
				pouz[i]=1;
				return(0);
			}
return(1);
}
int main(void)
{
int i;

scanf("%d",&n);
while(n!=0)
{
//	poc=1;
	i=0;
	scanf("%d%d",x+i,y+i);
	minx=x[0];
	maxx=x[0];
	miny=y[0];
	maxy=y[0];
	for(i=1;i<n;i++)
	{
		scanf("%d%d",x+i,y+i);
		if(minx>x[i])
		{
			minx=x[i];
		}
		else
		{
			if(maxx<x[i])
				maxx=x[i];
		}
		if(miny>y[i])
		{
			miny=y[i];
		}
		else
		{
			if(maxy<y[i])
				maxy=y[i];
		}
	}
	memset(pouz,0,n);
	xx=maxx+minx;
	yy=maxy+miny;
	for(i=0;i<n;i++)
		if(pouz[i]==0)
		{
			if(test(i)==1)
				break;
//			else
//				poc++;
		}
	if(i==n)
		printf("V.I.P. should stay at (%.1f,%.1f).\n",xx/2.0,yy/2.0);
	else
		printf("This is a dangerous situation!\n");
/*	for(i=0;i<n;i++)
		printf("%d",(int) pouz[i]);
	printf("\n");*/


scanf("%d",&n);
}


return(0);
}