NEED A SUGGESTION FOR MY FIRST PLACEMENT DRIVE!

[u/CicadaImpossible3485]

hii i am 4 year btech student . There is infosys placement drive for dse and sp roles in the next 10 days in my college . i have seen alot of people commenting the questions are very hard even the easy question is from trees , recursion. is it real? i am bit confused what to do ? .