UVA10923 Seven Seas

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=21&page=show_problem&problem=1864 [PDF](https://uva.onlinejudge.org/external/109/p10923.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10923/a0703258d4970f43c6a6942f255e912942b1a77e.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10923/7163faeff952e77834c7e497c54c5eba9c1ffdff.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA10923/6801c91b3ec26e2e3b5dfc2c1417e31433f6b39a.png)