The Murder Case

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Sherlock Holmes was trying to solve another murder case. He found a box that can be unlocked only by forming a pattern on it. Box has a matrix of LEDs of N x M on the top and K switches which can toggle some LEDs on the box. Sherlock Holmes being very smart already knew the pattern that has to be formed using the LEDs to unlock the box. He found this task a bit tedious so asks you for help. Given

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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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