Samsung Electronics Junior Software Engineer interview questions

They call me to come to their office and get interview of 3 hours, first hour was with the worker about machine learning features and image proccesing and then the manager ask me 2 technical questions All about math

The first round was a coding task onsite, simple dynamic programming was enough to solve. I was asked about search algorithms, data structures, and tasks to solve (to write pseudocode for recursive search algorithm). There was few question about language syntax, but it didn't make that big impact on a result. The interview lasted quite long (circa 3h) and we were forced to finish because of the other meeting.