题意
思路
代码
cpp
/**
* Author by Rainboy blog: https://rainboylv.com github: https://github.com/rainboylvx
* rbook: -> https://rbook.roj.ac.cn https://rbook2.roj.ac.cn
* rainboy的学习导航网站: https://idx.roj.ac.cn
* create_at: 2026-07-10 14:41
* update_at: 2026-07-10 14:41
*/
#include <bits/stdc++.h>
using namespace std;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
return 0;
}