message: Fix OOB access.
diff: @@ -61,7 +61,7 @@ Reorganize::Reorganize(int argc, char *argv[])
  m_Rank = m_Comm.Rank();
  m_Size = m_Comm.Size();
  - if (argc < 5)
  + if (argc < 7)
  {
  PrintUsage();
  throw std::invalid_argument(
  