UVA10421 Critical Wave

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=16&page=show_problem&problem=1362 [PDF](https://uva.onlinejudge.org/external/104/p10421.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10421/538c4c2951999856531e7c6a1b5614a20d4568dd.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10421/59de0a165f7ecbef91309fd40877eced9c4b462d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10421/691df43ab111ea73dab61e28a61563a772449478.png)