UVA11853 战场 Paintball

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=226&page=show_problem&problem=2953 [PDF](https://uva.onlinejudge.org/external/118/p11853.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11853/86115eefdc60948e3596c5f2667753c3711f1bb1.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11853/cbb300f900a50ba247b7c5b00063d61d57327da2.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11853/6f2561af46e83926583fbc05fbf5d6d9e373ab32.png)