I am very weak at math

Revision en1, by altahsh, 2025-07-20 20:36:27

i feel am very weak at math this problem take 2 days with me https://mirror.codeforces.com/contest/2117/problem/D I'm not even close to a solution after 2 days.

my question how i can get better at math?

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en1 English altahsh 2025-07-20 20:36:27 226 Initial revision (published)