I got refeeral for SDE1
Round 1:- Machine coding round.They shared a scenario of room booking system and asked to design it using language of your choice.Code should be readable ,should be modular and extensible.
Round 2:- PS/DS 2 questions were asked and they were medium level.
1 question was bfs and second was of linklist.Both were of medium level.
Round 3:- PS/DS 2 questions were asked and they both were hard level.
One was graph union by path compresssion and other was DP.Both were hard level.
Suggestions for PS/DS:- They ask tree and graphs so prepare for those 2 topics well.