SELECT 
  RANK() OVER(ORDER BY SUM(b.POINT) DESC) AS RANK,
  b.USER_ID AS USER_ID,
  SUM(b.POINT) AS POINT,
  (strftime('%s', b.SUBMITTED_AT) - strftime('%s', a.STARTED_AT)) AS EX_TIME
      , (COUNT(b.USER_ID) - 1) AS WRONG_ANS
FROM SUBMISSIONS AS b
INNER JOIN ENTRIES AS a ON a.ENTRY_ID = b.ENTRY_ID
AND a.CONTEST_ID = b.CONTEST_ID 
AND a.USER_ID = b.USER_ID

GROUP BY b.USER_ID

ORDER BY
    RANK ASC
    , WRONG_ANS ASC
    , a.USER_ID ASC;