“缺瓦”综合症。
Once you9ve determined what your missing tile is, explore whether acquiring it will really make you happy.
一旦确定了你所缺失的瓦片是哪一块，想想重新获得它是否真的会另你幸福。
Write down the numbers on the tiles in both the starting and goal states (0 for the missing tile) in row-major order to form two sequences of integers.
将初始状态和目标状态的木块上的数字按行优先顺序写下来变成两个整数序列。
It's like looking up at a tiled ceiling and concentrating on the space where one tile is missing.
这就像看瓦房顶一样，专门看缺了一片瓦的那块地方。
It9s like looking up at a 26 tiled ceiling and concentrating on the space where one tile is missing.
这就像看瓦房顶一样，专门看缺了一片瓦的那块地方。
It's like looking up at a 26 tiled ceiling and concentrating on the space where one tile is missing.
这就像看瓦房顶一样，专门看缺了一片瓦的那块地方。
It's like looking up at a 26 tiled ceiling and concentrating on the space where one tile is missing.
这就像看瓦房顶一样，专门看缺了一片瓦的那块地方。
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