give virtual contests, it helps a lot. understand the topics that you are facing problem in, like binary search or dp and practice them.

4 months is enough to become expert, you'll reach pupil in no time

virtual contests as much as you can, remember that practice makes perfect.

topics such as prefix/frequency/binary search/two pointers (speaking with these topics after being decent in stls ofc).

adhocs.

A-B in div2, A-B-C in div3, A-B-C-D in div4 with a decent time, and you will be pupil, gl!

solve problems in the range 800-1200, and try solving them within time limit, it will help for sure

just solve problems with greedy/constructive algorithms/math/binary search tags to make suru you can solve these problems quickly and accurately. take virtual participation everyday, and try to solve the problems you didn't solve during the contest as much as possible after the contest.

Honestly, pupil is not too hard. Just upsolve. I use mostafa sheet, have found it very helpful. Do some cses too to learn new concepts. If (and only if) you put in the hard work, you'll easily reach pupil in 4 months.

I would suggest you to do speed practice on problems <= 1200

Do rated contest

Be intrepid when it comes to solving arduous problems. The journey may seem interminable, but have faith in yourself. Don't fall in the trap of temerity once you gain momentum, keep solving tougher problems. Your problemset should replete of the color green, showcasing your problem solving ardor and your perseverance to not falter throughout the drudgery.

Solve A&B fast in div.2 and practice Qs in Range of 1000-1400

ادهوك و ماث (اختباري)

if only i knew how to reach pupil... i feel so depress

Aim higher, there is no glory in reaching Pupil!

Solving all 1200 and 1300 rated problems here got me to pupil. If necessary do 1400 problems after that.

Learn basic maths and work on your implementation skills.

Avoid spending time on data structures except for arrays, stacks, and queues.

Keep giving contests whatever the case be.

Start solving 1200 to 1400

Topics that you should know in my opinion:

1. Binary search
2. Two pointers
3. Basics of dfs and bfs
4. cumulative sum
5. some base in math That's what i remember for now.

get good at greedy problems, a lot of the A and B questions are greedy. get comfortable solving problems until 1300 rating.

try from time to time to time yourself and see how many questions of difficulty range of 900-1200 can solve in a specific time frame.

Most importantly, try to learn something from every question you solve, maybe take notes of what you learned from that question, or what mistakes you made and how to not make them again in the future.

good luck!

Edit: Learn how to not get nervous during competition, when you are nervous you can't think properly, stay relaxed and sharp. This will come as you compete more.

learn fft