UVA255 Correct Move

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=4&page=show_problem&problem=191 [PDF](https://uva.onlinejudge.org/external/2/p255.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA255/e5a323bfc923867a0ca3cd088838b3f4799e3d56.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA255/dc09919152f7c877c8002ead0d79ff473d3fd6bb.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA255/32915fe0a926ae54002c07640aac6389646d84d2.png)