let main() =
  let v, t = Scanf.sscanf (read_line()) "%f %i" (fun x y -> x, (float_of_int y)) in
  let d = v *. t in
  let d_int = int_of_float d in
  let d_precise = if fst @@ modf d > 0.99999999999 then d_int + 1 else d_int in
  print_int d_precise;
  print_endline ""