UVA11213 Flipull

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=24&page=show_problem&problem=2154 [PDF](https://uva.onlinejudge.org/external/112/p11213.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11213/be47eef68b6df1348f4e28220f51922a16287f36.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11213/80fa1907983d2e420d4cfc9c541f21374a29a02e.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11213/d8bd8cf69082514b47dad1e31837fa00fa40ce1a.png)