Chen.Jr的博客

传送门 题面： 3676: [Apio2014]回文串 Time Limit: 20 Sec  Memory Limit: 128 MB Submit: 3755  Solved: 1755 [Submit][Status][Discuss] Description 考虑一个只包含小写拉丁字母的字符串s。我们定义s的一个子串t的“出  现值”为t在s中的出现次数乘以t的长度。请你求出s的...

  传送门 题面： 也许这是唯一能阻止乐爷AK的方法( Just for Fun ) Time Limit: 1500 MS     Memory Limit: 512 MB Submit Status 一个字符串如果从前往后读和从后往前读是一样的，那么它被称为回文串。举个例子，"a","aa","appa","queryreuq"都是回文串。 对于一个初始为空的字符串S，你可以进行...

传送门 题面：   Harry got a string T, he wanted to know the number of T’s disjoint palindrome substring pairs. A string is considered to be palindrome if and only if it reads the same backward or forward....

传送门 题面： Victor loves to play with string. He thinks a string is charming as the string is a palindromic string.  Victor wants to play nn times. Each time he will do one of following four operations....

传送门 题面： A number is skr, if and only if it's unchanged after being reversed. For example, "12321", "11" and "1" are skr numbers, but "123", "221" are not. FYW has a string of numbers, each substring...