Attempt Number: 4
Error Message: Action not unique compared to other actions chosen from this state before. Choose a new action

Action Reasoning:
To keep reducing waiting and travel costs, we need to use fast elevators wherever viable for remaining moves. Passenger p3 is on floor 4 and needs to go to floor 5. Moving p3 to fast0 at floor 4 brings us closer to the goal optimally.

New State Description:
- fast0: At floor 4 (n4), 1/2 passengers, contains passenger p3.- fast1: At floor 0 (n0), 0/2 passengers, empty.- slow0-0: At floor 2 (n2), 0/1 passengers, empty.- p0: On floor 2 (n2).- p1: On floor 1 (n1).- p2: On floor 5 (n5), at their destination.- p3: On fast0, on floor 4 (n4).- p4: On floor 4 (n4), at their destination.- p5: On floor 0 (n0), at their destination.- p6: On floor 2 (n2).

Action Chosen:
(board p3 fast0 n4 0 1)
