UVA10853 Pablito nailed a nail

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=20&page=show_problem&problem=1794 [PDF](https://uva.onlinejudge.org/external/108/p10853.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10853/f40f8fc8f0960262ba487f1675801cd0b2197683.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10853/d7458eba8dfb872fda24afd747ad1463eda8626d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10853/b4dd2030dd64327e4e7d00ec11011ccd3fedd192.png)