题目：https://ac.nowcoder.com/acm/contest/11169 从左到右，从右到左分别求一次字符串hash值 从字符串起点每次枚举长度为D的字符串，如果是回文串，继续往后枚举，如果不是回文串ans++ #include<iostream> #include<cstring> #include<cstdio> #include<algorithm> #include<set> #include<queue> #include<vector> using namespace std;...