UVA10761 Broken Keyboard

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=19&page=show_problem&problem=1702 [PDF](https://uva.onlinejudge.org/external/107/p10761.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10761/c5b38b49ae330e0145ac57781fe566e4d1d1dba3.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10761/ab72072b92c4f2be2f4a7afd72b91db63c802c77.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10761/feb7645266f3691926085fc36e5ca1eb9bddfde2.png)