UVA11414 Dream

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=26&page=show_problem&problem=2409 [PDF](https://uva.onlinejudge.org/external/114/p11414.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11414/56126ffea3c121a040a6f0415620859600a82acb.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11414/bd96f2d2df571fb27e0a81b35cfab6aba1364b1b.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11414/2e73b121ed7df9dcf546cafb1b06289e72a284f9.png)