Sailthru Software Engineer interview questions

Followed the usual process, starting phone call with a recruiter, follow up phone call with another developer, where I answered some technical questions and did a remote coding test. Showed up to the in person interview, and the coordinator took a while to find someone to interview me. Eventually some guy showed up who seemed like he did not want to be there, and asked me to do a coding problem that I feel like he made up on the spot. He was very irritable and snide. After him, I interviewed with one more developer, this time a woman who asked me to code binary search, and she was more friendly.