UVA12384 Span

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=278&page=show_problem&problem=3806 [PDF](https://uva.onlinejudge.org/external/123/p12384.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12384/6ee762e7059ef3b2ab8a510ce38e8b89775065a7.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12384/5d47d27792d2f0dfb8294f23c022721adb277961.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12384/48604de5dad4f6a48124d5746b1708d84daf12b6.png)