defmodule Main do
  def main do
    s =
      IO.gets("")
      |> String.trim()
      |> String.to_charlist()

    [i, j] =
      IO.gets("")
      |> String.trim()
      |> String.split()
      |> Enum.map(&(String.to_integer(&1)))

    s_i = Enum.at(s, i)
    s_j = Enum.at(s, j)

    s
    |> List.replace_at(i, s_j)
    |> List.replace_at(j, s_i)
    |> IO.puts()
  end
end