Simple MySql Solution ,faster than 93.77% of MySQL online submissions
\nSelect actor_id,director_id from actordirector\ngroup by actor_id,director_id\nhaving count(director_id)>=3\n
```\nSelect actor_id,director_id from actordirector\ngroup by actor_id,director_id\nhaving count(director_id)>=3\n```
['MySQL']