import scala.io.StdIn.readLine
object Main {
    def main(args: Array[String]): Unit = {
        readLine.split(" ").map(_.toInt) match {
            case Array(a, b, c) =>  if (b < a) {
                println("No")
            } else if (b > c) {
                println("No")
            } else {
                println("Yes")
            }
        }
    }
}
