How to train for "Actual" Math (The 'math' tag is misleading)?
Difference between en1 and en2, changed 5 character(s)
Recently, I have started solving 1500 rated problems, then I encountered this problem↵
PROBLEM: Codeforces Round 962 (Div. 3) **FUN**↵
[ link](https://mirror.codeforces.com/problemset/problem/1996/D)↵
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I want to balance my Ad Hoc kind of reasoning with the maths logic as well.↵
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The problem is that the math tag on Codeforces is a massive grab-bag. When I filter by it, I mostly get:↵
1. Simple pattern-finding/observation problems.↵
2. Standard Number Theory (primes, GCDs) that I already know or can easily learn.↵
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Finding problems that require  algebraic manipulation, variable bounding, and combinatorics is very hard.↵
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Also, what should be my approach to improve well?

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  Rev. Lang. By When Δ Comment
en3 English MIRZAPURI 2026-05-09 13:37:58 36 Tiny change: 'very hard.\n\n\n\nAl' -> 'very hard. So, how can I found these problems?\n\n\n\nAl'
en2 English MIRZAPURI 2026-05-09 13:19:08 5 Tiny change: '**FUN**\n[ ](https://' -> '**FUN**\n[link](https://'
en1 English MIRZAPURI 2026-05-09 13:18:18 735 Initial revision (published)