Killing Zombies

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The zombie apocalypse is here and Chef is stuck at an old construction site. The site is surrounded by walls on three sides. On the fourth side is a fence where $N$ zombies are standing in a row. The zombies are numbered from $1$ to $N$ from left to right. Zombie $i$ has $Z_i$ health points initially. Luckily there are $M$ cranes Chef has access to. The $i^{th}$ crane carries $K_i$ construction

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solution.cppC++17

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