Meta Developer interview questions

They contacted me by email and asked me to perform a test at interviewstreet.com website. The test has a timer and should be solved in at most 1 hour. You should write the code, and make sure that all test cases are passing. That means that you have to write the output in the exactly way they are expecting. I finished the test in 55 min. After that they contacted by email again to schedule a phone interview.