Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE country (country_id VARCHAR, LENGTH INTEGER)
TABLE: CREATE TABLE roller_coaster (country_id VARCHAR, LENGTH INTEGER)

### Question ###
How many countries do not have an roller coaster longer than 3000?

### Accurate SQL ###

SELECT COUNT(*) FROM country WHERE NOT country_id IN (SELECT country_id FROM roller_coaster WHERE LENGTH > 3000)