Logarithmic Equation

CodeChefOpen on judge ↗

Chef has a sequence of $N$ integers $A_1, A_2, ..., A_N$. Chef thinks that a triplet of integers $(i,j,k)$ is good if $1 \leq i < j < k \leq N$ and $P$ in the following expression contains an odd number of ones in its binary representation: $P = [ A_i<< ( \lfloor \log_2(A_j) \rfloor + \lfloor \log_2(A_k) \rfloor + 2 ) ] + [A_j << ( \lfloor \log_2(A_k) \rfloor + 1) ] + A_k$ The $<<$ ope

HINT LADDERno hints yet

L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

🔒

L5 Full solution

L5 unlocks only if you insist twice

solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI