_ main(cell dict, int t3) {
  int index = -1;
  do {
    (index, slice value, int found) = dict.udict_get_next?(32, index);
    if (found) {       
      (int temp1, int temp2) = (value~load_uint(16), value~load_uint(32));
      if (t3 > temp2) {
        dict~udict_delete_get?(32, index);
      }
    }
  } until ( ~ found);
  return dict;
}