UVA153 Permalex

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=3&page=show_problem&problem=89 [PDF](https://uva.onlinejudge.org/external/1/p153.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA153/b9673b6f56be9fd0bdba04402a222899cd22d0a3.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA153/decd0cc57b2bf7e5b14b2a0a6a677d5c968b9ca4.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA153/d3c2d8160d1412f2c8476fb9aa2cdc1d0d3bc622.png)