AllMediaDesk interview questions

I was invited for the code challenges, the tasks are all leetcode hard questions. I found the answer on chegg but I choose to use my own way to solve it. I end up using three hours of doing it. I was told they would not proceed my application because all of the developers that they hired for were able to finish all tasks within two hours.

Given 3 timed take-home coding challenges as part of the first round of interviews. Once you access the provided link, a hidden timer begins and you have to submit it within 4 hours.