UVA12878 Flowery Trails

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=861&page=show_problem&problem=4743 [PDF](https://uva.onlinejudge.org/external/128/p12878.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12878/a23c23bbcdba7e2a3723a05ac28658560ef31c72.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12878/ddca6594d9b0acb4a0556ee34e5acc84b9f8298e.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12878/f1b496695535cf37770272a3fd0fe9d07d2e55c6.png)