What to practice/learn for ACM ICPC Dhaka Preli and get selected for on-site.

My university positions 100+ in on-site, 400+ in preli and CF Rating <= 1200. Not good

I fear of missing out if I don't admit in course. and i cant afford them.

though it'd be time saving as I am busy with job and uni

for those who go to continental regionals how do you guys do it?

in my country, those who are in better uni get supports from seniors and teachers. i study somewhere where full-ride was offered and was affordable.

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update: problem list that is curated for faster progress

update 2: problem list that is public

why downvote newcomers