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

#define ER 0.00001

struct bod {
  int x, y, c;
  bool used;
  bod() {}
  bod(int _x, int _y)
    : x(_x), y(_y), c((x + 10000) * 20000 + y + 10000), used(false) {}
};

bod body[21000];
int blen;

int cmp(const void* _a, const void* _b)
{
  bod* a = (bod*)_a;
  bod* b = (bod*)_b;

  return a->c - b->c;
}

int OneTask()
{
  scanf("%d", &blen);

  if(blen == 0)
    return 0;

  int xs = 0;
  int ys = 0;

  for(int i = 0; i < blen; i++) {
    int x, y;
    scanf("%d %d", &x, &y);
    body[i] = bod(x, y);
    xs += x;
    ys += y;
  }

  double x0 = 2*xs / (double)blen;
  double y0 = 2*ys / (double)blen;
  //printf("S: %f %f\n", x0 / 2, y0 / 2);
  
  qsort(body, blen, sizeof(bod), cmp);
  bool ok = true;
  
  for (int i = 0; i < blen; i++) {
    int x, y;
    double dx, dy;
    dx = x0 - body[i].x;
    dy = y0 - body[i].y;
    x = (int)(dx);
    y = (int)(dy);    
    if (fabs(x - dx) > ER || fabs(y - dy) > ER) {
      ok = false;
      break;
    }

    bod b(x, y);
    void* p = bsearch(&b, body, blen, sizeof(bod), cmp);
    if(p == NULL) {
      ok = false;
      break;
    }
  }

  if(ok)
    printf("V.I.P should stay at (%.1f,%.1f).\n", x0 / 2 + ER, y0 / 2 + ER);
  else
    printf("This is a dangerous situation!\n");

  return 1;
}

int main()
{
  while(OneTask())
    ;
  return 0;
}