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此题bt之处输入中有可能存在不合法之处， 比如： 2 2 1 1 1 1 或 3 3 0 0 0 0 1 1 1 1 1 输出都应该是0，碰到不合法数据，就当此蛇不合法，进行处理不管他即可！ Followed by: Post your reply here: |
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