Programming knowledge vs finance knowledge

I have limited amount of time before i need to start applying for quant internships and my knowledge of c++ is non existent ( i know a bit of python) and my finance knowledge is very basic. Which should i focus on, keeping in mind the interviews for quant internships and the requirements of the job?
(I also have to revise my undergrad math and stats work for my masters in applied math program as well as become more proficient in python.)