#include <stdio.h>
#include <stdlib.h>
#include <string.h>
struct xy { int x,y; } pts[20002];
struct { double x,y; } teziste;
int cmp(const void * A,const void *B)
{
	struct xy * l, *r;
	l = (struct xy *) A;
	r = (struct xy *) B;
	if (l->x < r->x)
		return -1;
	else if (l->x > r->x)
		return 1;
	else
		return r->y - l-> y;
}
void spocti(int i,struct xy * obraz)
{
	obraz->x = (int) (teziste.x * 2 - pts[i].x);
	obraz->y = (int) (teziste.y * 2 - pts[i].y);
}
int main(int ac, char ** av)
{
	register int i, npts;
	struct xy obraz;
	bool nl=false;
	for (;;nl=true) {
		if (nl)
			putchar('\n');
		// nacist
		scanf("%d" , & npts);
		if (!npts)
			exit(0);
		for (i=0;i<npts;i++)
			scanf("%d %d",&pts[i].x, &pts[i].y);
		// teziste:
		teziste.x = teziste.y = 0.0;
		for (i=0 ; i < npts ; i++ ) {
			teziste.x += pts[i].x;
			teziste.y += pts[i].y;
		}
		teziste.x /= npts;
		teziste.y /= npts;
		// sort body:
		qsort (pts, npts, sizeof(struct xy), cmp);
		for (i = 0 ; i < npts ; i++) {
			spocti(i,&obraz);
			if (!bsearch(&obraz, pts, npts,
						sizeof(struct xy), cmp)) {
				printf("This is a dangerous situation!");
				goto x;
			}
		}
		printf("V.I.P. should stay at (%.1f,%.1f).",
				teziste.x,teziste.y);
x:;
	}
	return 0;
}