Count Mentions Per User

Description

You are given an integer numberOfUsers representing the total number of users and an array events of size n x 3.

Each events[i]` can be either of the following two types:

- Message Event: ["MESSAGE", "timestampi", "mentions_stringi"]



- This event indicates that a set of users was mentioned in a message at timestampi.

- The mentions_stringi string can contain one of the following tokens:


- id<number>: where <number> is an integer in range [0,numberOfUsers - 1]. There can be multiple ids separated by a single whitespace and may contain duplicates. This can mention even the offline users.

- ALL: mentions all users.

- HERE: mentions all online users.









- Offline Event: ["OFFLINE", "timestampi", "idi"]


- This event indicates that the user idi had become offline at timestampi for 60 time units. The user will automatically be online again at time timestampi + 60.





Return an array mentions where mentions[i] represents the number of mentions the user with id i has across all MESSAGE events.

All users are initially online, and if a user goes offline or comes back online, their status change is processed before handling any message event that occurs at the same timestamp.

Note that a user can be mentioned multiple times in a single message event, and each mention should be counted separately.