HARRY POTTER AND HIS MAGICIANS

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Harry Potter is making a team of magicians to fight against Voldemort. Each magician is assigned a rank. More the rank more is the power. Higher rank implies more power. Due to some rules of Hogwarts, Harry can't randomly change the rank assigned to a magician. But, Harry can either add or subtract k from it. The only rule is that you have to cast the spell on each magician by either adding or su

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solution.cppC++17

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