void dict_compact_values (struct dictionary *);
size_t dict_get_compacted_value_cnt (const struct dictionary *);
int *dict_get_compacted_idx_to_fv (const struct dictionary *);
void dict_compact_values (struct dictionary *);
size_t dict_get_compacted_value_cnt (const struct dictionary *);
int *dict_get_compacted_idx_to_fv (const struct dictionary *);