HeavyLightDecomposition = ref object
  N*: int
  P*, PP*, PD*, D*, I*, rangeL*, rangeR*: seq[int]

CPLIB_TREE_HLD = 1

proc depth(hld: HeavyLightDecomposition; p: int): int {....raises: [], tags: [].}

proc dist(hld: HeavyLightDecomposition; u: int; v: int): int {....raises: [],
    tags: [].}

proc heavyChildOf(hld: HeavyLightDecomposition; v: int): int {....raises: [],
    tags: [].}

proc heavyRootOf(hld: HeavyLightDecomposition; v: int): int {....raises: [],
    tags: [].}

proc initAuxiliaryTree(hld: HeavyLightDecomposition; v: seq[int]): UnWeightedUnDirectedTableGraph[
    int] {....raises: [KeyError], tags: [].}

proc initAuxiliaryWeightedTree(hld: HeavyLightDecomposition; v: seq[int]): WeightedUnDirectedTableGraph[
    int, int] {....raises: [KeyError], tags: [].}

proc initHld(adj: seq[seq[int]]; root: int): HeavyLightDecomposition {.
    ...raises: [], tags: [].}

proc initHld(g: DirectedGraph; root: int): HeavyLightDecomposition

proc initHld(g: UnDirectedGraph; root: int): HeavyLightDecomposition

proc la(hld: HeavyLightDecomposition; starting: int; goal: int; d: int): int {.
    ...raises: [], tags: [].}

proc lca(hld: HeavyLightDecomposition; u: int; v: int): int {....raises: [],
    tags: [].}

proc median(hld: HeavyLightDecomposition; x: int; y: int; z: int): int {.
    ...raises: [], tags: [].}

proc numVertices(hld: HeavyLightDecomposition): int {....raises: [], tags: [].}

proc parentOf(hld: HeavyLightDecomposition; v: int): int {....raises: [], tags: [].}

proc path(hld: HeavyLightDecomposition; r: int; c: int; include_root: bool;
          reverse_path: bool): seq[(int, int)] {....raises: [], tags: [].}

proc subtree(hld: HeavyLightDecomposition; p: int): (int, int) {....raises: [],
    tags: [].}

proc toSeq(hld: HeavyLightDecomposition; vtx: int): int {....raises: [], tags: [].}

proc toSeq2In(hld: HeavyLightDecomposition; vtx: int): int {....raises: [],
    tags: [].}

proc toSeq2Out(hld: HeavyLightDecomposition; vtx: int): int {....raises: [],
    tags: [].}

proc toVtx(hld: HeavyLightDecomposition; seqidx: int): int {....raises: [],
    tags: [].}

iterator children(hld: HeavyLightDecomposition; v: int): int {....raises: [],
    tags: [].}

iterator subtreeV(hld: HeavyLightDecomposition; p: int): int {....raises: [],
    tags: [].}