UVA12025 Wrong Keys

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=242&page=show_problem&problem=3176 [PDF](https://uva.onlinejudge.org/external/120/p12025.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12025/d22e8de8cab53ea76cdcfe5d3b77dfa331e82b88.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12025/c3fc22c25824e409a50a4b49529ea6caf50f68e7.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12025/19aea54254c2ae7612acf88c3067c43dc6084079.png)