UVA10510 Cactus

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=17&page=show_problem&problem=1451 [PDF](https://uva.onlinejudge.org/external/105/p10510.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10510/8f8ef1bc248071e829dba57f6c8e0dec8783975d.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10510/64a7949bea41def85a0b2283b9cbcba9f8f163dc.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10510/979085ac359564f1fade5e9caf5c694e9cfad4e7.png)