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help with this recurrence relation
By om1429888, history, 2 years ago, In English

https://codeforces.net/gym/102644/problem/A

for this problem i thought of the recurrence relation and then applied matrix exponentitation, my relation was (1-p)*f(n-1)+p*p*f(n-2);

why is this relation wrong?

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2 years ago, # |
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Isn't it f(n) = (1-p)f(n-1) + p(1-f(n-1))?

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