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#BZOJ3238. [Ahoi2013]差异
ID: 26601
Type: Default
1000ms
256MiB
Tried: 0
Accepted: 0
Difficulty: (None)
Uploaded By:
Hydro
[Ahoi2013]差异
题目描述
输入格式
一行,一个字符串S
输出格式
一行,一个整数,表示所求值
cacao
54
f提示
2<=N<=500000,S由小写英文字母组成
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