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

#define PI 3.1415295354

int main()
{
	int i,j,N,hour;
	float x,y,r;

	scanf("%f %f\n", &x, &y);
	while (!(x==0 && y==0)) {
		hour = (int)ceil((x*x+y*y)*PI/100);
		printf("The property will be flooded in hour %d.\n",hour); 
		scanf("%f %f\n", &x, &y);
	}

	return 0;
}