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这组数据输出该是什么》?

Posted by dynamic_study at 2009-08-31 17:26:58 on Problem 2549
In Reply To:如此暴力的代码也WA?? Posted by:dynamic_study at 2009-08-31 16:40:18
4
0 0 0 0


4 
1 -1 1 1

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