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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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