#include <stdio.h>
#include <stdlib.h>

typedef struct {
  int x, y;
} point;

point pole[20010];
int body;
int posx, posy;
int sx, sy;
int index;
double symx, symy;

int compare(const void *arg1, const void *arg2) {
  point *p1 = (point*)(arg1);
  point *p2 = (point*)(arg2);
  if (p1->x > p2->x) return 1;
  if (p1->x < p2->x) return -1;
  if (p1->x == p2->x) {
    if(p1->y < p2->y) return -1;
    if(p1->y == p2->y) return 0;
    if(p1->y > p2->y) return  1;
  }
  
  return 0;
}

int main() {
  scanf("%d", &body);
  while(body != 0) {
    sx = sy = 0;
    for(int index = 0; index < body; index++) {
      scanf("%d %d", &posx, &posy);
      pole[index].x = posx;
      pole[index].y = posy;
      sx += posx;
      sy += posy;
    }
    symx = sx / (double(body));
    symy = sy / (double(body));
    qsort( (void*)pole, body, sizeof(point), compare);
//    for(int k = 0; k < body; k++)
//      printf("%d %d\n", pole[k].x, pole[k].y);
    bool ok = true;
    for(int i = 0; i < body / 2+1; i++) {
      if (symx - pole[i].x == pole[body-i-1].x - symx) {
        if (symy - pole[i].y == pole[body-i-1].y - symy)
	  ok = true;
      }
      else {
        ok = false;
	break;
      }
    }
    if (ok)
      printf("V.I.P. should stay at (%.1f,%.1f).\n", symx, symy);
    else
      printf("This is a dangerous situation!\n");
  
    scanf("%d", &body);
  }
  return 0;
}