// luogu-judger-enable-o2
include <cstdio>
//include <iostream>
include <cstring>
include <algorithm>
include <cmath>
define R(a,b,c) for(regist ......
It is well known that AekdyCoin is good at string problems as well as number theory problems. When given a string s, we can write down all the non-emp ......