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一定要理解清楚题目意思！一定要理解清楚题目意思！ Sorted sequence determined after 4 relations: ABCD. 输入前4个关系后，决定出了一个序列（关系总数可能大于4） Inconsistency found after 2 relations. 输入前2个关系后，冲突出现了（环，关系总数可能大于2） Sorted sequence cannot be determined. 所有关系输入后，序列和冲突均无出现 Followed by: Post your reply here: |
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