I applied online. The process took one week.

They asked one question for the F2F Coding Round:

1. Average Session Duration Part A – Daily Average Session Duration You are given a log file containing all login and logout events for a single day. Implement a program that computes the average session duration for every user. A session starts with a logged_in event and ends with a corresponding logged_out event. Assumptions Every login has a matching logout. Logs are ordered by timestamp. A user can have multiple sessions in a day. Example Input user: Tejashree | action: logged_in | time: 1736503565 user: Tejashree | action: logged_out | time: 1736507165 user: Tejashree | action: logged_in | time: 1736510765 user: Tejashree | action: logged_out | time: 1736517965 Output User: Tejashree, Avg Session Time: 5400 Explanation: Session 1 = 3600 seconds Session 2 = 7200 seconds Average = (3600 + 7200) / 2 = 5400 seconds. This was the question asked.

The code has to be executable, and we should explain the time and space complexity.