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

int main(void) {
  double x,y, l, h;
  int res;
  while (1) {
    scanf("%lf%lf",&x,&y);
    if (x == 0 && y == 0) break;
    l = sqrt(x*x+y*y);
    h = (M_PI * l*l) / 100;
    res = ceil(h);
    printf("The property will be flooded in hour %d.\n",res);
  }
  return 0;
}