← All problemsSign in

Longest AND Subarray

CodeChefRating 1502Open on judge ↗

You are given an integer $N$. Consider the sequence containing the integers $1, 2, \dots, N$ in increasing order (each exactly once). Find the length of the longest subarray in this sequence such that the [bitwise AND](https://en.wikipedia.org/wiki/Bitwise_operation#AND) of all elements in the subarray is **positive**. ### Input - The first line contains $T$ denoting the number of test cases. The

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

Sign in to chat with the tutor and save your progress.

Sign in to start