Shiryam Technologies interview questions

First round was hr round with general questions including technical questions on basic python 2 round technical, questions on python, postgresql and optimisation. Round 3 problem solving, find the first and last occurrence of element k in the given list. Round 4, general questions on my personal projects. Problem solving merging point of 2 linked list. Cleared all the rounds but received no offer. They wasted my precious time. Don't apply at all.