#include <stdio.h>
#define _m 100001

int main(void) {

 struct {int bx, by, b;} bod [20000], *p, *p2;
 int x, y, i, j, N;
 int minx, miny, maxx, maxy;
 int sym;
 float cx, cy;

 scanf("%d\n", &N);
 while (N>0) {
  sym = ((N & 1)==0);

  minx = _m; maxx = -_m; miny = _m; maxy = -_m;
  p = bod;
  for (i=0; i<N; p++, i++) {
   scanf("%d %d\n",&x,&y);
   if (sym) {
    p->bx = x; p->by = y; p->b = 1;
    if (x<minx) minx = x;
    if (x>maxx) maxx = x;
    if (y<miny) miny = y;
    if (y>maxy) maxy = y;
   }    
  }  // nacitani

   if (sym) {
    cx = float(minx + maxx) / 2;
    cy = float(miny + maxy) / 2;
    //printf("%f %f ", cx, cy);
    p = bod;
    for (i=0; i<N-1; i++, p++) if (p->b) {
     sym = 0;
     x = int(float(2*cx) - p->bx);
     y = int(float(2*cy) - p->by);
     p2 = p;
     p2++;
     for (j=i+1; j<N; j++, p2++) if (p2->b) {
      if ((p2->bx==x) && (p2->by==y)) {
        p2->b = 0;
        sym = 1;
	break;
      }
     } // for j
     if (!sym) break;
    } // for i
   } // if sym

  if (!sym) {
   printf("This is a dangerous situation!\n");
  } else {
   printf("V.I.P. should stay at (%.1f,%.1f).\n", cx, cy);
  }
  scanf("%d\n", &N);
 }
 return 0;
}