![P6869 [COCI2019-2020#5] Putovanje(LCA)](/uploads/reation/bcimg6.png)
P6869 [COCI2019-2020#5] Putovanje(LCA)
const int N=2e5+5; int n,m,_; int i,j,k; int a[N]; int son[N],sz[N],fa[N],dep[N]; int top[N]; struct Node { int to,c1,c2; Node(int to=0,int a=0,int b=0):to(to),c1(a),c2(b){} }; vector<Node&g...
