UVA12605 Ripple Effect

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=602&page=show_problem&problem=4283 [PDF](https://uva.onlinejudge.org/external/126/p12605.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12605/4cdb7b158a59ef96d81be0aa1e59125b0361dd28.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12605/ecc6d8e00711bb9bc9f45fcb6ecb52edaf666f5e.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12605/dbeb2f72fe95c99d1e8a77412442fca8e7c79bdb.png)