UVA926 Walking Around Wisely

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=11&page=show_problem&problem=867 [PDF](https://uva.onlinejudge.org/external/9/p926.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA926/8fe68e1ec6d90badce2d42ec348aca4a78f46944.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA926/cc26b0b7b20bb89c062d365928650d2145d0eee9.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA926/6df994171770652e8aed8c6a269308839137bc8d.png)