补题计划

#### 1.线段树 [Max or Min](https://vjudge.net/contest/340727#problem/A)
##### [题解](https://www.cnblogs.com/et3-tsy/p/14099236.html)
#### 2.CF 751 750
#### 3.机器人复赛
#### 4.写博客 [题目](https://atcoder.jp/contests/arc101/tasks/arc101_b)
#### [题目](https://vjudge.net/contest/458346#problem/B)