I have applied for the CS1 position from careers site and almost 15 days later got a call first HR , asking for interview .

Round 1(DSA)- Asked Max water trapped problem variation and able to code within 20 mins from brute to most optimal with code with proper dry run.

Asked to interviewer should I run the code he told write the edge cases and I told our code will cover those automatically there in no special condition needed , still he forced me by giving vague reasons like why our compiler should go down if it handle the edge case in very first line then I have writtern the condition for edge case and asked to modify the inequality(v.size()<=2 to v.size()-2<=0) v is the vector in c++ and drilled me in internals of c++. I was'nt able to answer these point to point.

Then asked me the Design problem where he want to design three api
-Get(id)
-Add(id,name)
-Delete(id)

All these should be in O(1) time , I proposed Hashing solution but he didn't agree due to collision it can go upto O(n) time.

Overall he did'nt look satisfied .After that pin drop silent for few days , tried to teach Hr multiple times , one day she picked the call I explained the situation , she agrees to move me into 2nd round.

Round 2(DSA): It was quite good and had very good discussion as wll interviewwer asked me the Reverse word in the sentence by taking care of the spaces.

Solved it efficiently in exact O(n) time by iterating from last.
In last he asked about time zone related quetions where Suppose U are in india and time server in USA they how you overcome the latency , I have multiple approaches for that and looks Satisfied.

Round 3: Joined the call on time but inteviewer did'nt joined waited almost 15 mins but no response , then tried to call HR , again same story they are not picking after some time got call back and told them the situation she told will call in 5 10 mins and asked me to leave the meeting I did same , and waiting for call back , 1 hour passed no response and I called back , again not picking.

Then next day till evening no response and I called again , she picked and asked , who is this, literally it was more bad , candidate is not rejected state , and they did'nt know who'is calling.ANyway I again explained the situation , she told we will re conduct let's see how it goes...

Wish me the Luck That hiring team respond on time !