UVA12923 The Island

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=862&page=show_problem&problem=4802 [PDF](https://uva.onlinejudge.org/external/129/p12923.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12923/a0bc9ac1ee6ab2a3fa50a522edeecc2a162806d8.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12923/9c38a30a2ab73105dfdc497b6b256e6ecefb9342.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12923/f75fef6d4ca582b31a9d7b4e445a5ceabba98fd5.png)