UVA11686 Pick up sticks

Description

[problemUrl]: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=78&page=show_problem&problem=2733 [PDF](https://uva.onlinejudge.org/external/116/p11686.pdf) ![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11686/6ce7c73cb15186b6f1df934507c89a4c40a0e6bb.png)

Input Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11686/7b9caf10dff79af0ae2ecc804dc9bc918f04e619.png)

Output Format

![](https://cdn.luogu.com.cn/upload/vjudge_pic/UVA11686/542bda6a704af5b2d4eef466f09ebf65b8649471.png)