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Re:我错的数据

Posted by justesse at 2010-12-23 20:06:36 on Problem 1984
In Reply To:我错的数据 Posted by:Sasuke_SCUT at 2009-08-11 15:17:05
4 3
1 2 1 E
3 4 2 S
2 4 1 N
2
1 3 3
1 4 3

answer is
4
2

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