I thought this was easy, but I had made a mistake somewhere, since my feedback on this part was simply "you had bugs in your code." The phonescreen programming interview required you write a program to read and parse a file, then do some math with the values you got from the file. You use a collaborative code editor with the interviewer over the internet, it was super fun and I'd do that part again, too bad they don't have this part in the in person.