UVA11891 Deep in Jungles

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=226&page=show_problem&problem=2991 [PDF](https://uva.onlinejudge.org/external/118/p11891.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11891/938e91081a7ce081d551ac78f6e1639cc0947734.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11891/e2313977368e6fa34d54ad4459db9119c28273d6.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11891/2af01be1d853896bd0a5a50a8a5dbf46e168c929.png)