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ac的注意一下啊，下面两组数据不一定过~~~汗

Posted by ACM_Qun at 2011-04-09 18:03:48 on Problem 1177 
3
0 0 1 2
0 2 1 4
1 1 2 3
12
3
0 1 2 2
2 1 4 2
1 0 3 1
12
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