1050. Actors and Directors Who Cooperated At Least Three Times

Table: ActorDirector +-------------+---------+ | Column Name | Type | +-------------+---------+ | actor_id | int | | director_id | int | | timestamp | int | +-------------+---------+ timestamp is the primary key (column with unique values) for this table. Write a solution to find all the pairs (actor_id, director_id) where the actor has cooperated with the director at least three times. Retur