Hello coders! I started participating contest in Codeforces. I solved 3 problems at the last div 4 contest. And upsolved the 4th problem. I know only C++, STL, basic Binary search, Prefix sum and a little bit of basic Bit manipulation. Nothing else. I repeat, I know only C++, STL, basic Binary search, Prefix sum and a little bit of basic Bit manipulation. Nothing else.

So, give some advices what next to learn to reach at least Pupil for now. And how can i practice? And What strategy should i follow and maintain to be a better Competitive programmer. Thanks.