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WA好几次,主要还是没看清题目意思,然后这个样例又太有迷惑性了

Posted by ZJGSUlvdou at 2015-07-20 15:58:27 on Problem 2367
他这里输入是5说明有5行,
然后下面第一行是0.说明1不是任何数字的前置条件
第二行4 5 1 0说明是2,4和2,5和2,1
所以我输入错了= =

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