45 minutes of interview :
5 min initial introduction and 5 min at end to clarify your queries.

2 question asked:

1. Given a list of task ,where each task have id , duration to complete that task and dependency . Find the time to complete that task. for eg:
   Task 1 : duration 10s depends on task 2,3
   Task 2 : duration 5s depends on task 3
   Task 3: duration 15s depends none

so time taken to solve task 1:30s ,task 2:20s and task 3:15

2)Leftmost column index of 1

Solve both question optimally in the given time , but got confused in explaining and telling the time complexity. The feedback I got to redo the phone interview round. Any one else have similar experience ,what the difficulty level of question when giving the phone interview again.

Thanks