Functional_Graph = ref object
  tree*: HeavyLightDecomposition
  cycle_number: seq[int]
  cycle_idx: seq[int]
  roots: seq[int]
  cycle*: seq[seq[int]]

CPLIB_GRAPH_FUNCTIONALGRAPH = 1

proc canmove_size(functional_graph: Functional_Graph; x: int): int {....raises: [],
    tags: [].}

proc cyclesize(functional_graph: Functional_Graph; x: int): int {....raises: [],
    tags: [].}

proc depth(functional_graph: Functional_Graph; x: int): int {....raises: [],
    tags: [].}

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

proc get_cycle(functional_graph: Functional_Graph; x: int): seq[int] {.
    ...raises: [], tags: [].}

proc incycle(namori: Functional_Graph; x: int): bool {....raises: [], tags: [].}

proc initFunctionalGraph(graph: UnWeightedDirectedGraph): Functional_Graph {.
    ...raises: [], tags: [].}

proc movekth(functional_graph: Functional_Graph; x, cnt: int): int {....raises: [],
    tags: [].}

proc root(functional_graph: Functional_Graph; x: int): int {....raises: [],
    tags: [].}