Union-Find
https://qiita.com/ofutonton/items/c17dfd33fc542c222396
https://ja.wikipedia.org/wiki/%E7%B4%A0%E9%9B%86%E5%90%88%E3%83%87%E3%83%BC%E3%82%BF%E6%A7%8B%E9%80%A0
https://algo-method.com/descriptions/132
素集合データ構造
https://pyteyon.hatenablog.com/entry/2019/03/11/200000
https://algo-method.com/descriptions/136
https://zenn.dev/lotz/articles/91e377138fc4a94f956c#設計技法とデータ構造
Persistent Union-Find Data Structure
https://www.lri.fr/~filliatr/ftp/publis/puf-wml07.pdf
永続配列
https://zenn.dev/naoya_ito/articles/50e79d637d55c3
hs
https://zenn.dev/kaityo256/articles/union_find_physics