UVA13102 Tobby Stones

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=871&page=show_problem&problem=5000 [PDF](https://uva.onlinejudge.org/external/131/p13102.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13102/e5f058a21f9f9d09e1900e6c7421580001a00143.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13102/2419485dd05954869dfa4fdcfcdf1f0a7d26c31a.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA13102/11b087d4a731bc38a695e36429273731fa3cd6d7.png)