分支界限法求解0-1背包问题。有N件物品和一个容量为V的背包，第i件物品的费用是c[i]，价值是w[i]，求解将哪些物品装入背包可使这些物品的费用总和不超过背包容量，且价值总和最大。-Branch and bound method for solving 0-1 knapsack problem. N items and a capacity V of the backpack, the cost of items i C [i], the value of W [i], the sum of