{
    "ItemX": {"guest":"餐桌就餐人数","appear":"餐后垃圾","notAppear":"餐后无垃圾"},
    "Items": [
        {"guest":0,"appear":0,"notAppear":10000},
        {"guest":1,"appear":2000,"notAppear":8000},
        {"guest":2,"appear":0,"notAppear":10000},
        {"guest":3,"appear":0,"notAppear":10000},
        {"guest":4,"appear":2500,"notAppear":7500},
        {"guest":5,"appear":0,"notAppear":10000},
        {"guest":6,"appear":3000,"notAppear":7000},
        {"guest":7,"appear":0,"notAppear":10000},
        {"guest":8,"appear":3500,"notAppear":6500}
    ]
}