PartialPersistentUnionFind = object
  par_or_siz: seq[int]
  time: seq[int]
  size_time: seq[seq[int]]
  size_value: seq[seq[int]]
  last: int

CPLIB_COLLECTIONS_PARTIALPERSISTENTUNIONFIND = 1

proc initPartialPersistentUnionFind(N: int): PartialPersistentUnionFind {.
    ...raises: [], tags: [].}

proc issame(self: var PartialPersistentUnionFind; u, v, t: int): bool {.
    ...raises: [], tags: [].}

proc issame(self: var PartialPersistentUnionFind; u, v: int): bool {....raises: [],
    tags: [].}

proc root(self: var PartialPersistentUnionFind; x: int): int {....raises: [],
    tags: [].}

proc root(self: var PartialPersistentUnionFind; x: int; t: int): int {.
    ...raises: [], tags: [].}

proc size(self: var PartialPersistentUnionFind; x, t: int): int {....raises: [],
    tags: [].}

proc size(self: var PartialPersistentUnionFind; x: int): int {....raises: [],
    tags: [].}

proc unite(self: var PartialPersistentUnionFind; u, v, t: int): bool {.
    discardable, ...raises: [], tags: [].}

proc unite(self: var PartialPersistentUnionFind; u, v: int): int {.discardable,
    ...raises: [], tags: [].}

proc when_unite(self: var PartialPersistentUnionFind; u, v: int): int {.
    ...raises: [], tags: [].}