Robuta

https://www.boost.org/doc/libs/1_77_0/doc/html/intrusive/sg_set_multiset.html Intrusive scapegoat tree based associative containers: sg_set, sg_multiset and sgtree scapegoat tree associative containers intrusive based https://www.boost.org/doc/libs/1_37_0/doc/html/intrusive/sg_set_multiset.html Intrusive scapegoat tree based associative containers: sg_set, sg_multiset and sgtree scapegoat tree associative containers intrusive based