Chef On Island

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Suppose Chef is stuck on an island and currently he has $x$ units of food supply and $y$ units of water supply in total that he could collect from the island. He needs $x_r$ units of food supply and $y_r$ units of water supply per day at the minimal to have sufficient energy to build a boat from the woods and also to live for another day. Assuming it takes exactly $D$ days to build the boat and re

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solution.cppC++17

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