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

int main(void)
{
    float x,y;
    char line[100];
    gets(line);
    sscanf(line,"%f %f",&x,&y);
    while (x != 0.0f || y != 0.0f)
    {
	int t;
	t = ceil(0.03141592654 * (x*x + y*y));
	printf("The property will be flooded in hour %d.\n",t);
	gets(line);
	sscanf(line,"%f %f",&x,&y);
    }
    return 0;
}