UVA12451 Let's call SPaDe a SPaDe

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=279&page=show_problem&problem=3882 [PDF](https://uva.onlinejudge.org/external/124/p12451.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12451/dd5b7c45c398e4af50976d9ea970714450d9e351.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12451/07c44db51025e4ce8ed7c8c55961206dd999867c.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12451/f5210842c1694504d5abf798e884b589810e9ccc.png)