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Give you n ( n < 10000) necklaces ,the length of necklace will not large than 100,tell me  How many kinds of necklaces total have.(if two necklaces can equal by rotating ,we say the two necklaces ...

Give you a string with length N, you can generate N strings by left shifts. For example let consider the string “SKYLONG”, we can generate seven strings:  String Rank  SKYLONG 1  KYLONGS 2  YLONGSK 3...

链接：https://ac.nowcoder.com/acm/contest/887/A 来源：牛客网 题目描述 A string is perfect if it has the smallest lexicographical ordering among its cyclic rotations. For example: "0101" is perfect as it is th...