does the solution need to be exactly same as in solution tab?

I was solving a problem `Amazon employees' annual bonus` where I came up with the solution which is not exactly same as that in solution and it was not getting accepted. Is this solution not correct or the system isn't accepting that ?

SELECT employee_id
    , first_name
    , last_name
    , joined_date
    , salary
    , CASE WHEN joined_date > '2021-05-01' THEN 0
        WHEN joined_date < '2021-01-01' THEN 10000
        WHEN joined_date < '2021-05-01' AND joined_date > '2021-01-01' 
            THEN (Day FROM (joined_date::timestamp - '2021-05-01'::timestamp))/120*1000
        ELSE 0
        END as bonus
FROM amzn_employees

SOLUTION:

SELECT first_name, last_name, CASE WHEN joined_date >= '2021-05-01' THEN 0
                                  WHEN joined_date < '2021-01-01' THEN 10000
                                  ELSE ('2021-05-01' -  joined_date) * 1.0 / 120 * 10000 END AS bonus
FROM amzn_employees;