The Preliminary Contest for ICPC China Nanchang National Invitational
题解：
[1]:https://www.cnblogs.com/songorz/p/10743353.html
| 题目一览表 | 考察知识点 |
| I. Max answer | 单调栈+暴力？？ |
| J. Distance on the tree | 树链剖分 |
| M. Subsequence | 思维？？ |
题解：
[1]:https://www.cnblogs.com/songorz/p/10743353.html
| 题目一览表 | 考察知识点 |
| I. Max answer | 单调栈+暴力？？ |
| J. Distance on the tree | 树链剖分 |
| M. Subsequence | 思维？？ |