defmodule Frac do
  defstruct nume: 0, deno: 1

  def new(nume, deno) do
    if deno == 0, do: raise "ZeroDivision error"
    if deno < 0 do
      new(-nume, -deno)
    else
      %__MODULE__{nume: nume, deno: deno}
    end
  end

  def is_less_or_equal(a, b) do
    na = a.nume * b.deno
    nb = b.nume * a.deno
    na <= nb
  end
end

defmodule Main do
  def input, do: IO.read(:line) |> String.trim
  def ii, do: input() |> String.to_integer
  def li, do: input() |> String.split |> Enum.map(&String.to_integer/1)
  def yn(b), do: IO.puts(if b, do: "Yes", else: "No")

  def main do
    n = ii()
    fracs = for _ <- 1..n do
      [a, b] = li()
      Frac.new(a, b)
    end

    fracs
    |> Enum.sort(fn a, b -> !Frac.is_less_or_equal(a, b) end)
    |> Enum.map(fn a -> "#{a.nume} #{a.deno}" end)
    |> Enum.join("\n")
    |> IO.puts
  end
end