object Main extends App {
  val inputs: Seq[String] = scala.io.Source.stdin.getLines().toList
  val nums = inputs.head.split(" ")
  val a = nums(0)
  val b = nums(1)
  val c = nums(2)

  println(solve(a, b, c))

  private def solve(a: String, b: String, c: String): String = {
    if (a <= c && c <= b) {
      "Yes"
    } else {
      "No"
    }
  }
}