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

void OneTask(double x, double y)
{
  double S = M_PI * (x * x + y * y) / 100;
  printf("The property will be flooded in hour %d.\n", (int)S + 1);
}

int main()
{
  double x, y;
  for(;;) {
    scanf("%lf %lf", &x, &y);
    if ((x == 0.0) && (y == 0.0)) {
      break;
    }
    OneTask(x, y);
  }
}