TEAMBOOK псевдокод вершинной двусвязности

function paint(v, color, parent):
  for (v,u)∈E:
    if u == parent
      continue
    if not visited[u]
      if up[u] ⩾ tin[v]
        newColor = ++maxColor
        col[vu] = newColor
        paint(u, newColor, v)
      else
        col[vu] = color
        paint(u, color, v)
    else if tin[u] < tin[v]
      col[vu] = color

function solve():
  for v∈V:
    dfs(v)
  for v∈V:
    if not visited[v]
      maxColor++
      paint(v, maxColor, -1)