窮舉算法

問題：小雞5毛錢一隻，母雞3塊錢一隻，公雞5塊錢一隻，問300塊錢買100只雞，有幾種買法？ $xPrice = 0.5; $yPrice = 3; $zPrice = 5; $price = 300; $count = 100; $zCount = $price / $zPrice; $yCount = $price / $yPrice; $zCount = $price

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