Maze: d4rl.pointmaze.MEDIUM_MAZE

-01234567
0########
1#.C##..#
2#..#...#
3##...###
4#D.#...#
5#.#B.#A#
6#...#..#
7########

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Task 00: A -> B
Task 01: A -> C
Task 02: A -> D
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