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提供数据。wa的可看。

Posted by goto_chenquan at 2014-08-03 14:34:27 on Problem 1703
1
4 4
D 1 2
D 3 4
D 1 4
A 1 3
ans : In the same gang.

1
2 1
A 1 2
ans : In different gangs.

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