#include <stdio.h>
#include <math.h>
int main()
{
double tezx=0,tezy=0,x2,y2,EPS=0.00001;
long int n,polex[20002],poley[20002],i,j;
scanf("%d",&n);
while (n!=0){
  tezx=tezy=0;
  for(i=1;i<=n;i++){
    scanf("%d%d",&polex[i],&poley[i]);
    tezx+=polex[i]/n;
    tezy+=poley[i]/n;
  }
  for(i=1;i<=n;i++){
    x2=2*tezx-polex[i];
    y2=2*tezy-poley[i];
    for(j=1;j<=n;j++){
      if ((abs(polex[j]-x2)<EPS)&&(abs(poley[j]-y2)<EPS)){goto c;}
    }
      goto ne;
      c:if (i==j){goto ne;}
  }    
  goto ano;
  ne:printf("This is a dangerous situation!\n");
  goto k;
  ano:
  if (abs(tezx)<EPS){tezx=0;}
  if (abs(tezy)<EPS){tezy=0;}
  printf("V.I.P. should stay at (%.1f,%.1f)\n",tezx,tezy);
  k:
  scanf("%d",&n);
}



return 0;
}