// L4: Function.

std::map<int, int> memory_generateConstPlayfield(n: int) {
  idGroups: std::map<int, int> = { }
  id = 0
  for gid in range(0, n):
    idGroups[id] = gid
    id += 1
    idGroups[id] = gid
    id += 1
  }
  return idGroups
}

// L20: Test.

str test_memory_generateConstPlayfield() {
  idGroups = memory_generateConstPlayfield(2)
  if (
    len(idGroups) == 4 and
    idGroups[0] == 0 and
    idGroups[1] == 0 and
    idGroups[2] == 1 and
    idGroups[3] == 1
  ):
    return "OK: memory_generateConstPlayfield"
  }
  return "ERR: memory_generateConstPlayfield"
}

// L36: Run.

print(test_memory_generateConstPlayfield())