洛谷 SP263 Period 题目描述 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 <= i* <= N*) we want to k…
洛谷题目链接:[POI2014]KUR-Couriers 题目描述 Byteasar works for the BAJ company, which sells computer games. The BAJ company cooperates with many courier companies that deliver the games sold by the BAJ company to its customers. Byteasar is inspecting the coope…