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代码说明：

一个0-1背包问题的C++实现，背包的容量为t，各物品的重量分别为w1，w2。。。wn，找一个能装下最大重量的物品组合，用递归形式的贪心法实现-a 0-1 knapsack problem of C achieved, the capacity for backpack t, the weight of the items were w1, w2. . . Wn, one can find the largest installed under the weight of goods portfolio, using recursive form greedy Method