Chef and Subsequences

CodeChefRating 2019Open on judge ↗

Though our Head Chef retired from sport programming long back, but that did not affect his passion to contribute to the programming community. He still remains engaged by creating new problems and passing it on to the online judges. Last Night, he thought of a following problem for which he could not figure out a solution. You being his friend from the older days of programming decide to help him.

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.

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