Cracking Passwords

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Chef has finally figured a way to crack passwords on any website. He has narrowed it down to a function which evaluates the hash value of password after which it is trivial for Chef to find the password. The function is given as $F[i] = 2*F[i-1] + 3*F[i-2] + 2^{i-1} + 3^{i-2} $ and $F[0] = 1$ and $F[1] =1$. Chef is busy cracking some more passwords. He asks for your help to answer some queries

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L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

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L5 Full solution

L5 unlocks only if you insist twice

solution.cppC++17

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