UVA12647 Balloon

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=602&page=show_problem&problem=4376 [PDF](https://uva.onlinejudge.org/external/126/p12647.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12647/67132dde4edafa4e3af39faeb152c122f6f8490d.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12647/880f2ec293145062bbcb587e7039824d8696c820.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12647/3a839e415758c4c2dd9b88fe026c2fd60127a511.png)