UVA698 Index

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=8&page=show_problem&problem=639 [PDF](https://uva.onlinejudge.org/external/6/p698.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA698/10f88cbc9d6f2cd83ea7fd05af66c1d4c09e4d0a.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA698/28845c45bf99f887324ff595f69e9467c0418dcb.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA698/388f05f34fc2c44d476a146653669b2be3461afd.png)