UVA12627 奇怪的气球膨胀 Erratic Expansion

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=602&page=show_problem&problem=4352 [PDF](https://uva.onlinejudge.org/external/126/p12627.pdf) ![](https://cdn.luogu.com.cn/upload/image_hosting/920r7nnk.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12627/045bccd32b7221bc7b2113013454952bca802efa.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12627/b1643c23d77e515ebebe7df3805d1e8575f48ca1.png)