I failed the interview at FG teams LLZ - 250 questions on C++, Json and other java stuff

I replied to a newsletter about job opportunity - working as C++, Java developer. They sent me an invitation to complete automatic interview - around 250 questions ranging from pure C++ syntax to design patterns to Java-related technologies. I did not have time to complete so I skipped many questions and just did randomly selected answers! :) quite an experience - eh? and Yes - I failed, they did not reveal the score