UVA812 Trade on Verweggistan

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=10&page=show_problem&problem=753 [PDF](https://uva.onlinejudge.org/external/8/p812.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA812/7efa6c5d4754f615ac70758f68650aab37596cdd.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA812/ed0cb209800bf753d140272da9243cc4554628f3.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA812/ba62c73555ad85d2a74cc817bc30b5f1c329a1af.png)