Sherlock and Musical Notes

CodeChefOpen on judge ↗

Sherlock is a very talented musician. He is very fond of symmetric tunes and coins the term **hemidemisemiquaver** for it. A tune is a **hemidemisemiquaver** only if it gives the same sound when played from start to end or end to start. There are **N** notes provided to Sherlock and each note is represented by an integer. Sherlock is also provided **M** pairs of notes **a** and **b**, such that

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