UVA12406 Help Dexter

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=279&page=show_problem&problem=3837 [PDF](https://uva.onlinejudge.org/external/124/p12406.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12406/1cc3ff830e7f57df5698056b7a256641ad012abc.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12406/fce8b0a22c796458a279a9c30ca466f44c2244e2.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12406/d979fbeeef573cfc3e09042f5a28b03e27b87965.png)