std::string SequencesHandler::reconstructPath(Path &path) {
  std::string dna;
  for (int i = 0; i < (int)path.vertices.size(); ++i) {
    auto &new_strain = entries_[path.vertices[i]];
    assert((int)new_strain.length() >= path.extension_lengths[i]);
    dna += new_strain.substr((int)new_strain.length() - path.extension_lengths[i]);
  }
  return dna;
}