UVA12809 Binary Search Tree

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=861&page=show_problem&problem=4674 [PDF](https://uva.onlinejudge.org/external/128/p12809.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12809/9ec24ddcf764c1e6f3f7c47564e4ecde23d1c80d.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12809/c393c844137ef2bfe2f9076b7a8d1e827f2c7c2d.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA12809/c3b3e67d920c24ed19b1ab0cdf0cbcbcee4f62ba.png)