program water;

var x, y, r2:real;
    t: real;
{const pi = 3.1415926535;    }

begin
  repeat
    readln(x, y);
    if (x<>0) or (y<> 0) then begin
      r2 := sqr(x) + sqr(y);
      t := pi*r2/100;
      writeln('The property will be flooded in hour ', round(t+0.5),'.');      
    end;
  until (x=0) and (y=0);
end.