UVA10288 优惠券 Coupons

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=14&page=show_problem&problem=1229 [PDF](https://uva.onlinejudge.org/external/102/p10288.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10288/a5b09147c052a4458e5c94466c2ca46eed8b2387.png)

Input Format

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Output Format

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