October Challenge 2020 Division 1

打了两次div2，终于能打div1了，还是挺兴奋的

Positive AND（10.2）
Replace for X(10.3)
Inversions(10.4)
D-Dimensional MST(10.4)
Adding Squares(10.4)
Compress all Subsegments(10.5)
Rooted Minimum Spanning Tree(10.5)
Random Knapsack(10.8)
Village Road Network（未做）

题解赛后发

标签：Division,October,10.5,10.4,Adding,题解,Challenge,Positive,Network
来源： https://www.cnblogs.com/Grice/p/13780596.html