code: def fast_stats(data):
      
      
      total_submission = len(data)
      total_submission_best = 0
      total_submission_best_succeeded = 0
          
      for submission in data:
          if "best" in submission and submission["best"]:
              total_submission_best = total_submission_best + 1
              if "result" in submission and submission["result"] == "success":
                  total_submission_best_succeeded += 1
          
      statistics = [
          (_("Number of submissions"), total_submission),
          (_("Evaluation submissions (Total)"), total_submission_best),
          (_("Evaluation submissions (Succeeded)"), total_submission_best_succeeded),
          (_("Evaluation submissions (Failed)"), total_submission_best - total_submission_best_succeeded),
          # add here new common statistics
          ]
      
      return statistics
docs: Compute base statistics about submissions