UVA10157 Expressions

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=13&page=show_problem&problem=1098 [PDF](https://uva.onlinejudge.org/external/101/p10157.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10157/92bd153045546a4add2db0546276ced67322646b.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10157/4317a9de00d49dbca272d21aca3812cfde1c9f91.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10157/7f9202ff84c53031a192bbddf9998950d6a7fcbd.png)