##### ###### ##### ### # # ### # # ###### ## ## ## ## ## ## ## # # # # # ## ##### #### ##### # # # # # # # #### ## # ## ## ## ## # # # # # ## ## # ###### ## ### # ### # ######
##### ###### ##### ### # # ### # # ###### ## ## ## ## ## ## ## # # # # # ## ##### #### ##### # # # # # # # #### ## # ## ## ## ## # # # # # ## ## # ###### ## ### # ### # ######
(Step-by-step execution)
Trace on input , edges : DFS from : disc[0]=0. Visit : disc[1]=1. Visit : disc[2]=2. Back edge : low[2]=0. Backtrack: low[1]=0. Visit : disc[3]=3.
Visit : disc[4]=4. Backtrack: low[3]=3 >= disc[1]=1, add . Backtrack: low[4]=4 >= disc[3]=3, add . Articulation points: . Both vertices satisfy the condition.
