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Problem 3238. -- [Ahoi2013]差异 -- 衡阳八中OJ离线版-2014-11-04
3238: [Ahoi2013]差异
Time Limit:
20 Sec
Memory Limit:
512 MB
Submit:
430
Solved:
208
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Description
Input
一行,一个字符串S
Output
一行,一个整数,表示所求值
Sample Input
cacao
Sample Output
54
HINT
2<=N<=500000,S由小写英文字母组成
Source
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