Current State ID: 0
Current State Description: We have a building with floors labeled 0 through 4 (n0 to n4). Each floor nX is considered “above” any floor nY where X < Y, meaning n0 < n1 < n2 < n3 < n4 in ascending order.

There are four elevators:
- **fast0**, a fast elevator currently at floor 0 (n0). It has 0 passengers right now and has a maximum capacity of 2 passengers. It can reach all floors from 0 to 4 (n0 to n4).
- **fast1**, another fast elevator, currently at floor 3 (n3). It holds 0 passengers at the moment and can also hold up to 2 passengers. It can serve all floors from 0 to 4 (n0 to n4).
- **slow0-0**, a slow elevator currently at floor 1 (n1). It has 0 passengers right now and has a maximum capacity of 1 passenger. It can reach floors 0, 1, and 2 (n0 to n2).
- **slow1-0**, another slow elevator, currently at floor 3 (n3). It holds 0 passengers at the moment and can also hold up to 1 passenger. It can serve floors 2, 3, and 4 (n2 to n4).

We have six passengers on specific floors:
- **p0** is on floor 1 (n1).
- **p1** is on floor 1 (n1).
- **p2** is on floor 4 (n4).
- **p3** is on floor 4 (n4).
- **p4** is on floor 1 (n1).
- **p5** is on floor 3 (n3).

Travel costs are as follows:
- Using a slow elevator costs 6 units to move between adjacent floors. For example, going from n0 to n1 or n1 to n2 costs 6. Longer jumps (e.g., n0 to n2) cost 7.
- Using the fast elevator costs 4 units to move between adjacent floors. For example, going from n0 to n1 or n1 to n2 costs 4. Longer jumps (e.g., n0 to n3) cost 10.

Child State ID: 1
Action Taken: (board p0 slow0-0 n1 n0 n1)
State Description: - fast0: At floor n0, 0/2 passengers.- fast1: At floor n3, 0/2 passengers.- slow0-0: At floor n1, 1/1 passengers (p0 on board).- slow1-0: At floor n3, 0/1 passengers.- p0: Onboard slow0-0.- p1: On floor n1.- p2: On floor n4.- p3: On floor n4.- p4: On floor n1.- p5: On floor n3.

Child State ID: 2
Action Taken: (move-up-fast fast1 n3 n4)
State Description: - **fast0**: A fast elevator currently at floor 0 (n0), with 0 passengers and a capacity of 2.- **fast1**: A fast elevator now at floor 4 (n4), with 0 passengers and a capacity of 2.- **slow0-0**: A slow elevator at floor 1 (n1), with 0 passengers and a capacity of 1.- **slow1-0**: A slow elevator at floor 3 (n3), with 0 passengers and a capacity of 1.- **p0**: On floor 1 (n1).- **p1**: On floor 1 (n1).- **p2**: On floor 4 (n4).- **p3**: On floor 4 (n4).- **p4**: On floor 1 (n1).- **p5**: On floor 3 (n3).

