defmodule Main do
  def main do
    [s, t, c] = IO.read(:line) |> String.trim() |> String.split(" ");
    si = String.to_integer(s); ti = String.to_integer(t);

    case {si, ti, c} do
      {si, ti, "<"} when si < ti -> IO.puts "YES"
      {si, ti, ">"} when si > ti -> IO.puts "YES"
      {si, ti, "="} when si == ti -> IO.puts "YES"
      _ -> IO.puts "NO"
    end
  end
end