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来组数据。。

Posted by 13678238733 at 2017-02-22 08:56:39 on Problem 3177 
11 14
1 7
7 11
7 8
8 10
8 9
9 11
9 10
1 2
2 6
2 5
5 3
5 4
4 6
4 3

答案是1 若判断同一边双有误，则可能输出0
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