Just fumbled Visa U.S. OA SDE1 level.

CodeSignal (proctored: webcam, microphone, and desktop share)
Duration: 70 min

Q1. Basic coding. The solution was 5 lines of code. Time it took me to complete: 10 min. Score 300/300.

Q2. Medium/Hard. Same as the Refueling Stops problem https://leetcode.com/problems/minimum-number-of-refueling-stops/description/
Time it took me to complete: ~30 minutes. Score: 300/300

Q3. Medium. Very similar to LRU Cache https://leetcode.com/problems/lru-cache/description/. Time it took me to complete it: ~20 minutes. Score: 300/300

Q4. Medium. Exactly this one: https://leetcode.com/problems/find-the-length-of-the-longest-common-prefix/description/
Time I had remaining: ~8 minutes. Score 0/300

Final score slightly less than 500.

Wish you all good luck. It is doable!