UVA10376 Snakes

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=15&page=show_problem&problem=1317 [PDF](https://uva.onlinejudge.org/external/103/p10376.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10376/e331b9550557375bc0625bc323c207bd5927c22f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10376/453ca676a152a2139be1dc2f38964e97e4341c20.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10376/4fd06514477826e3127b71c75bf42d750d9ea6ac.png)