Jo Haywood first went to the Daventry Community Larder in Northamptonshire as a shopper and for the past two years has volunteered to run the service.
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机器人租赁的商业逻辑：看上去成立，但并不简单从表面上看，机器人租赁是一门非常直观的生意。购买设备，通过平台接单，将机器人租给商场活动、企业年会、节庆表演等场景，赚取租金差价。
1. 建堆：将数组构建成大顶堆（父节点 = 子节点）
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