from typing import List


def bert_tokens_pre_processor(token_ids: List[int]) -> List[int]:
    """Add BERT style special tokens(CLS and SEP)"""
    BERT_CLS_ID = 101
    BERT_SEP_ID = 102

    processed_tokens = token_ids

    processed_tokens.insert(0, BERT_CLS_ID)
    processed_tokens.append(BERT_SEP_ID)

    return processed_tokens