UVA548 树 Tree

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=7&page=show_problem&problem=489 [PDF](https://uva.onlinejudge.org/external/5/p548.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA548/78473d26dddbe5f8314b7aac17e37af6d9c18840.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA548/d5af82d5dd26aa1f11be5b3e1cfa80708b9d2173.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA548/235ec8eb49fbab76e59891f6d6b4f6deb21da67a.png)