摘要：描述 传送门：我是传送门 A musical melody is represented as a sequence of N (1<=N<=20000)notes that are integers in the range 1..88, each representing a key on th 阅读全文

摘要：描述 注意，这一份后缀数组的代码并不能AC 传送门：我是传送门 Given two strings a and b we define ab to be their concatenation. For example, if a = “abc” and b = “def” then ab = “a 阅读全文