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一次AC，happy！ 16ms每次读取一行，就进行一次拓扑排序 判断拓扑排序的结果是否可以唯一有序或者得到矛盾的环 如果读完所有的数据还不能满足以上两种情况，输出结果不确定。 Followed by: Post your reply here: |
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