UVA669 Defragment

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=8&page=show_problem&problem=610 [PDF](https://uva.onlinejudge.org/external/6/p669.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA669/48b2c3843f82d8131716ce733be29f4f4c8218d3.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA669/88df09ffcfbedff0232f2e28cb44bb309c99c576.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA669/7687eb6635c4242a59e8fc542dc16edf98856154.png)