from typing import Callable


def _get_extreme_contract_id(
        account_id_to_jsons: list[tuple[int, dict]], comparator: Callable[[int, int], int]
) -> int:
    extreme_contract_id = None
    for account_id, parsed_json in account_id_to_jsons:
        contract_id = int(parsed_json.get("contract_id"))
        extreme_contract_id = (
            contract_id if extreme_contract_id is None else comparator(extreme_contract_id, contract_id)
        )
    return extreme_contract_id


def _get_min_contract_id(account_id_to_jsons: list[tuple[int, dict]]) -> int:
    return _get_extreme_contract_id(account_id_to_jsons, min)


def _get_max_contract_id(account_id_to_jsons: list[tuple[int, dict]]) -> int:
    return _get_extreme_contract_id(account_id_to_jsons, max)