object main{
  def main(args:Array[String]): Unit ={
    val sc = new java.util.Scanner(System.in)
    val a = sc.nextInt
    if(a == "" && a != 1 && a != 0){
        println("error")
    }else if(a == 0){
        println("1")
    }else{
        println("0")
    }
  }
}