对于每个日用品，你的程序要在一行内输出：成功交易的商品名、最低价、平均价和最高价。
For each commodity, your program should output the name of the commodity and the lowest, the average and the highest prices of successful deals in one line.
输出文件应该仅包含交易做成的日用品，并且按照商品名的字母顺序输出。
The output should contain only the commodities for which deals are made the order of the output must be alphabetic.
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