class Media1 {
      public static void main(String args[]){
      System.out.println("La media e'" + media(args));
      }
      static double media (String args[]){
        int n = args.length;
        int totale = 0;
        if (n > 0 ) {
           for (int i = 0; i < n; i++){
          totale += Integer.parseInt(args[i]);
          }
         return((float)totale/n);
         }
        else return(0f);
       }
    }