UVA13172 The music teacher

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=871&page=show_problem&problem=5083 [PDF](https://uva.onlinejudge.org/external/131/p13172.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13172/df572260483178d14707a073436a4b73639c0a94.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13172/51df017b6286eb6dbedf514a9f4b9faeb455066d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13172/492c81e06e68c3805d3292c60573c753d735c886.png)