UVA12674 Go up the ultras

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=602&page=show_problem&problem=4412 [PDF](https://uva.onlinejudge.org/external/126/p12674.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12674/aca5fdd5ae8960164b56b02bf93e7da037bf2704.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12674/9db259538de75c5ada59681e6b3f664583d10f79.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12674/9b2c70e867222eed613dbb02a7476fcba42c3028.png)