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原来两组数据之间不用空格的,贡献了一次PE,还好不是比赛,要不就被教练骂死

Posted by czcomt at 2008-12-14 19:30:46 on Problem 1128
原来两组数据之间不用空格的,贡献了一次PE,还好不是比赛,要不就被教练骂死,简单讲个思路,先把全部字母找出来,然后全排列,然后算法每个字母的区间的范围,然后再逐个排列去判断,不需要DFS了,不过全排列的方法比较笨,我用了7XX ms的

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