import java.util.Scanner;

public class Termostat {

  public static final double LIMIT = 21.0;

  public static void main (String[] args) {
    Scanner lector = new Scanner(System.in);

    System.out.print("Quina temperatura fa? ");
    double temperatura = lector.nextDouble();
    lector.nextLine();

    if (temperatura >= LIMIT) {
      System.out.println("Activa l'aire condicionat.");
    } else {
      System.out.println("Atura l'aire condicionat.");
    }
  }
}