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

int main(void)
{
    int h1;
    float a, b, c, r, h;
    
    for ( ; ; )
    {
	scanf("%f %f", &a, &b);
	if ((a == 0) & (b == 0))
	{
	    return 0;
	}
	c = a * a + b * b;
//	r = sqrt(c);
	h = (M_PI * c) / 100;
	h1 = (int) h;
	if (h > h1)
	{
	    h1++;	    	
	}
	printf("The property will be flooded in hour %d.\n", h1);
    }
}