#include <stdio.h>
#include <math.h>

struct kde
{
  int x, y;
} *pole;

double stred_x, stred_y, k_x, k_y, z;
int n;

int ex(float cx, float cy, int g)
{
  int e = 0;
  for (int h = g; h < n; h++)
    if ((g != h) && (pole[h].x == cx) && (pole[h].y == cy))
    {
      e = 1;
      break;
    }
  return e;
}

int main()
{
  int ide;
  scanf("%d", &n);
  while (n)
  {
    ide = 1;
    pole = new kde[n];
    stred_x = stred_y = 0;
    for (int j = 0; j < n; j++)
    {
      scanf("%d%d", &pole[j].x, &pole[j].y);
      stred_x += pole[j].x;
      stred_y += pole[j].y;
    }
    stred_x /= n;
    stred_y /= n;
    for (int k = 0; k < n; k++)
    {
      k_x = 2 * stred_x - pole[k].x;
      k_y = 2 * stred_y - pole[k].y;
      if (((pole[k].x != stred_x) || (pole[k].y != stred_y)) && !ex(k_x, k_y, k))
      {
        ide = 0;
        break;
      }
    }
    stred_x = stred_x * 10;
    z = modf(stred_x,  &stred_x);
    z *= 10;
    if (z >= 5) stred_x += 1;
    stred_x /= 10;
    stred_y = stred_y * 10;
    modf(stred_y,  &stred_y);
    z *= 10;
    stred_y /= 10;
    if (z >= 5) stred_y += 1;
    if ((stred_x < 0) && (stred_x > -0.05)) stred_x *= -1;
    if ((stred_y < 0) && (stred_y > -0.05)) stred_y *= -1;
    if (ide)
      printf("V.I.P. should stay at (%.1f,%.1f).\n", stred_x, stred_y);
    else
      printf("This is dangerous situation!\n");
    delete [] pole;
    scanf("%d", &n);
  }
  return 0;
}