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?
I am very weak at math
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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