UVA891 Syntrax

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=10&page=show_problem&problem=832 [PDF](https://uva.onlinejudge.org/external/8/p891.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA891/c55fdebe3dd22bd71876bc736f92c384f2161b79.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA891/b56eec9dc4b1a93b9e68df070a4a45d648bbc8e3.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA891/7595c33db5ed4d753582e9d84ac17a4450cde76d.png)