ACM题目:请问杭电1358的题目意思是什么?
ACM题目:请问杭电1358的题目意思是什么?
以下是题目:
Description
For each prefix of a given string S with N characters (each character has an ASCII code between 97 and 126,inclusive),we want to know whether the prefix is a periodic string.That is,for each i (2