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注意数据~~

Posted by czyuan at 2008-03-16 09:38:08 on Problem 1230
1
8 2
0 0 0 0
0 1 0 1
5 0 5 0
5 1 5 1
1 1 4 1
0 2 2 2
3 2 5 2
1 3 4 3


答案是:2

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