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