Drake and his Mischief

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Drake is a notorious kid, for his new mischief he targeted the assembly hall. Assembly hall contains N tube lights each tube light can be controlled by switching it on or off from the switchboard containing N switches, which is in another room by default lights of assembly hall are always off.Everyday Drake randomly clicked K switches and flee. The troubled teacher wants to know that how many tube

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solution.cppC++17

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