UVA10861 Security by Ambiguity

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=20&page=show_problem&problem=1802 [PDF](https://uva.onlinejudge.org/external/108/p10861.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10861/155ef0f7e8f5f755438d8a217473994aeecb47aa.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10861/23a262e376a36720e0aa6b6e99536d40a386bd2b.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10861/c864c9fabf9baa4f6678347d3f4789ccfce486f5.png)