U476173 第十五届蓝桥杯国赛c++-t3

题目背景

太懒了，不想转markdown语言了，将就一下

题目描述

![](https://cdn.luogu.com.cn/upload/image_hosting/igr5cls4.png) ![](https://cdn.luogu.com.cn/upload/image_hosting/yoa1hy89.png) ![](https://cdn.luogu.com.cn/upload/image_hosting/3e7wcuma.png)

输入格式

![](https://cdn.luogu.com.cn/upload/image_hosting/dvq31j1r.png)

输出格式

![](https://cdn.luogu.com.cn/upload/image_hosting/aeo8r7oz.png)