UVA10517 Wind of Change!

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=17&page=show_problem&problem=1458 [PDF](https://uva.onlinejudge.org/external/105/p10517.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10517/31b705e8efeb323c4bb70c1a9afbda1634c040ac.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10517/c12f24f262ec9df85842ceeebbe96168382957c4.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10517/ca55183c2791a9b66a09d323495cf607adc3c7f8.png)