1.对多个链表进行操作 2.回溯法求解0/1背包 3.分枝限界法求解0/1背包 4.回溯法求解n—皇后问题 5.图的操作（邻接表表示）-1. Operate on multiple lists 2. Backtracking method for solving 0/1 knapsack 3. Branch and bound method for solving 0/1 knapsack 4. Backtracking to solve n-queens pr

本程序解决背包问题，其中有多个类型的物品，每类物品可以有任意数量。-The procedure to solve knapsack problem, in which there are multiple types of items, each class can have any number of items.

背包九讲问题，各种高效解法，值得一看，包括01背包，完全背包，多重背包，一起三种背包的混合问题-Backpack nine speak problems, all kinds of efficient solution, is worth a look Including 01 backpack, completely backpack, multiple backpack, together three backpack of the mixed problem