Google Software Engineer - Internship interview questions

After I sent my CV, a recruiter contacted me. She was walking me through the whole hiring process. She helped me to solve problems: I got ill and asked to reschedule an interview. Also, I had a group call with other job applicants and Google employee, who gave me detailed information about an interview. Eventually, I had two interviews with two engineers, each of them took about 45 minutes with 15 minutes break. I had to solve a few algorithms tasks by writing code in shared Google document and I optimized one of them. In the end of each interview, I asked a few questions. A week and a half later or so I`ve got a refusal.

I had two interviews with two engineers, one of them was from Zurich. First I was asked about one of the project I've provided on my resume and then we began to discuss the problem proposed for my interview process. Both engineers were happy to answer my questions and it was a beautiful experience.