Archanics interview questions

The interview was honestly quite strange. Initially, there was a simple call to get me familiar with the company and vice-versa. However, the next call was a technical interview and the way it was conducted was strange. The interviewer asked me to share my screen and do any random problem on hackerrank. I open the website and he asks me to do the very first exercise that is unsolved. I complete the problem and apparently that was all for the technical round.