UVA10507 Waking up brain

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=17&page=show_problem&problem=1448 [PDF](https://uva.onlinejudge.org/external/105/p10507.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10507/ad111da030d4e1a8531e062263d9d0b084c956b0.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10507/16ae0b092404766b056246456a7f6d9dd84bb1d5.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10507/1b4bf8add93039c656b2945ae39938c9960f6a8a.png)