UVA12709 Falling Ants

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=823&page=show_problem&problem=4447 [PDF](https://uva.onlinejudge.org/external/127/p12709.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12709/5362a4239cff52684a0478fd11592c3c8d850986.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12709/06afade453ea4e1644b02591a83756705ac6a37d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12709/f37c2160b19e0e5bdc00ec4504dadcab5fbfb7c1.png)