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上期问题请看本刊2002年第1期。上期问题答案: 背包只有一个,最多只能承受10千克;物品有四类,价值各不相同:A类每件重6千克,
Please see the issue of the issue of the first issue of 2002 issue. The answer to the previous question: only one backpack, can only withstand up to 10 kilograms; items have four categories, the value varies: A class each weighing 6 kg,