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AC 啦,提供一系列数据!4 1 2 3 4 y 1 2 4 3 y 1 3 2 4 y 1 3 4 2 y 1 4 2 3 no 1 4 3 2 y 2 1 3 4 y 2 1 4 3 y 2 3 1 4 y 2 3 4 1 y 2 4 1 3 no 2 4 3 1 y 3 1 2 4 no 3 1 4 2 no 3 2 1 4 y 3 2 4 1 y 3 4 1 2 no 3 4 2 1 y 4 1 2 3 no 4 1 3 2 no 4 2 1 3 no 4 2 3 1 no 4 3 1 2 y 4 3 2 1 no 0 Followed by:
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