Bank Transaction Management Bot

Problem Statement

Bank Transaction Management Bot You\'ve been asked to program a bot for a popular bank that will automate the management of incoming requests. Every request has its own timestamp in seconds, and it is guaranteed that all requests come sequentially, i.e. the timestamp is strictly increasing. There are two types of incoming requests: deposit <timestamp> <holder_id> <amount> — request to deposit amount amount of money in the holder_id account. withdraw <timestamp> <holder_id> <amount> — request to withdraw amount amount of money from the holder_id account. As a bonus, bank also provides a cashback policy — 2% of the withdrawn amount rounded down to the nearest integer will be returned to the account exactly 24 hours after the request timestamp. If the cashback and deposit/withdrawal happen at the same timestamp, assume cashback happens earlier. Your system should also handle invalid requests. There are two types of invalid requests: invalid account numb