def main(args: Array[String]) {
    if (sys.env.getOrElse("TEST", "") == "1") {
      println(test());
    } else {
      val input = io.Source.stdin.getLines().mkString("\n");
      println(solve(input).trim());
    }
  }

  def solve(input: String): String = {
    val a :: s :: _ = input.split("\n").toSeq
    if (a.toInt >= 3200) {
      s
    } else {
      "red"
    }
  }