UVA11723 Numbering Roads

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=117&page=show_problem&problem=2823 [PDF](https://uva.onlinejudge.org/external/117/p11723.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11723/1268065abff4b9509912ca308aa5a84b89b14232.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11723/9de1c10fb5e3236bbebdaac4ed1cb6560ea944d0.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11723/71673a3a369cc3f2a894e0747b7e9c0c3db7967e.png)