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

int main(void) {
    int pocet, minx, miny, maxy, maxx, x, y, i, j, nasel, konec;
    
    float vzdalx2, vzdaly2, vzdalx, vzdaly;
    float symx, symy;
    int *pole[3];
    scanf("%d\n", &pocet);
    while(pocet != 0) {
	minx = 0;
	maxx = 0;
	miny = 0;
	maxy = 0;
        pole[0] = (int *) malloc(pocet*sizeof(int));	    
        pole[1] = (int *) malloc(pocet*sizeof(int));	    
	pole[2] = (int *) malloc(pocet*sizeof(int));
	for(i=0; i< pocet; i++) {
	    scanf("%d %d\n", &x, &y);
	    if (i == 0) {
		maxx = x;
		maxy = y;
		minx = x;
		miny = y;
		}
	    if (x > maxx) maxx = x;
	    if (x < minx) minx = x;
	    if (y > maxy) maxy = y;
	    if (y < miny) miny = y;
	    pole[0][i] = x;
	    pole[1][i] = y;
	    pole[2][i]= 0;
	}
	symx = (float)(maxx+minx)/2.0;
	symy = (float)(maxy+miny)/2.0;
	i=0;
	konec =0;
	while( (i<pocet) && (konec == 0)) {
	    nasel = 0;
	    if (pole[2][i] == 0) {
		vzdalx = symx - pole[0][i];
		vzdaly = symy - pole[1][i];
		j = i+1;
		if ((vzdalx == 0.0) && (vzdaly == 0.0)) {
		    pole[2][i] = 1;
		    nasel = 1;
		}
		while ((j<pocet) && (nasel == 0)) {
		    if (pole[2][j] == 0) {
			vzdalx2 = -(symx - pole[0][j]);
			vzdaly2 = -(symy - pole[1][j]);
			if ((vzdalx2 == vzdalx) && (vzdaly2 == vzdaly)) {
			    pole[2][i] =1;
			    pole[2][j] =1;
			    nasel = 1;
			}
		    }
		    j++;
		} 
		
		if (nasel == 0) {
		    printf("This is a dangerous situation!\n");
		    konec = 1;
		}
	    }
	    i++;
	}
	if (konec == 0)
	    printf("V.I.P. should stay at (%.1f,%.1f).\n", symx, symy);
	scanf("%d", &pocet);
	free(pole[0]);
	free(pole[1]);
	free(pole[2]);
    }
    return 0;
}