defmodule Main do
  def main do
    1..3
    |> Enum.map(fn _ -> IO.read(:line) |> String.trim() end)
    |> solve
    |> IO.puts()
  end

  def solve([n, x, y]) do
    s = x |> String.split()
    t = y |> String.split()

    0..((n |> String.to_integer()) - 1)
    |> Enum.reject(fn i -> s |> Enum.at(i) == t |> Enum.at(i) end)
    |> Enum.map(fn j ->
      """
      #{j + 1}
      #{s |> Enum.at(j)}
      #{t |> Enum.at(j)}
      """
      |> String.trim()
    end)
    |> Enum.join("\n")
  end
end