Imos2D = ref object
  B: seq[seq[int]]
  H: int
  W: int

CPLIB_UTILS_IMOS2D = 1

proc build(self: Imos2D): seq[seq[int]] {....raises: [], tags: [].}

proc initImos2D(H, W: int): Imos2D {....raises: [], tags: [].}

proc rectangle_add(self: Imos2D; il, ir, jl, jr, x: int) {....raises: [], tags: [].}