Uber Software Engineer/Developer interview questions

After the recruiter screening, Had a 1:1 coding session with an engineer. Got a leetcode hard problem. Actually solved the problem in the interview with all test cases passing (Verified the solution by copy pasting on leetcode) but still got a rejection. They have unrealistic standards and the expectation is to write the best code without mistakes on the first try. Fixing edge cases and improving code subsequently after writing initial code is seen as a concern. I am pretty sure if the tables were turned, the engineer himself couldnt solve the problem.