UVA12424 Answering Queries on a Tree

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=279&page=show_problem&problem=3855 [PDF](https://uva.onlinejudge.org/external/124/p12424.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12424/1b3a5f94e89f9dd72ac60f9c6e6cf8de4ab36c4f.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12424/dec15e600d9e6dc17fa6033350a89f6d08ccb71d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12424/e9276e7d5b2e67f968aeab0f7e2c4f7fd2140c25.png)