信息学竞赛中的动态树是啥玩意,有哪几种,最好贴下代码,pascal的...答:就知道一种 link-cut-tree { Problem: link-cut-tree. Author: zw } Program zw_link_cut_tree;Var i,j,k,o,p,n,m,ans,y,ind,tmp:longint;f,fa:array[1..200010] of longint;size:array[0..200010]of longint;son:array[0..1,1..200010]of longint;Procedure update(x:long...