UVA11813 Shopping

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=226&page=show_problem&problem=2913 [PDF](https://uva.onlinejudge.org/external/118/p11813.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11813/9ffcecd6f9a7076db2c0f7294d24336bf755a5c7.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11813/d809793d5e212d9ad487005f378fcd1e291ba99e.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11813/f83462431ef3f911792d70f16fb2c14edd1fb909.png)