#include <stdio.h>
#define _m 100001

typedef struct {int bx, by, b;} TBod;

int main(void) {

 TBod 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);

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

   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++) {
    //  printf("out %d %d\n", p->bx, p->by);
      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->bx==x) && (p2->by==y)) {
         p++; if (p==p2) p++;
	 p2->bx = p->bx;
	 p2->by = p->by;
	 if (p>p2) p--;
         sym = 1;
	 i++;
	 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;

}