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管理员请看看这组小数据,应该可以rejudge掉很多程序

Posted by zhangxiao1124 at 2008-04-29 21:03:21 on Problem 3410
4
1 1
0 1
0 0
1 0
4
0 1
0 0
1 -1
1 2


ans:0

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