UVA10969 Sweet Dream

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=21&page=show_problem&problem=1910 [PDF](https://uva.onlinejudge.org/external/109/p10969.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10969/ee3e2a2c297df76276018ca3aed3fd77d86930f0.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10969/3977feadf11fe1b9b9ff05de1e08cf57f9932089.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10969/ffd3d0fd2e0e0af54a754effc880aaa64e7999c3.png)