L1 questions based on heavily on template metaprgramming. Find the largest word count from the vector of sentances , having multiple spaces as well what is the difference between auto and decltype

I applied through consultancy it took one day.The first round was aptitude in which some questions on quantitative 3 linked list programs.2nd round was technical interview they asked questions on data atructure algorithm and deep knowledge of data structure.3rd round was 2nd technical it was easy they asked some puzzles and c cpp ..The interview and process is quite interesting for me